diff --git a/health/aidl/Android.bp b/health/aidl/Android.bp
new file mode 100644
index 0000000..940e4d8
--- /dev/null
+++ b/health/aidl/Android.bp
@@ -0,0 +1,62 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+aidl_interface {
+    name: "android.hardware.health",
+    vendor_available: true,
+    srcs: ["android/hardware/health/*.aidl"],
+    stability: "vintf",
+    backend: {
+        cpp: {
+            enabled: false,
+        },
+        java: {
+            enabled: true,
+            sdk_version: "module_current",
+        },
+        ndk: {
+            vndk: {
+                enabled: true,
+            },
+        },
+    },
+}
+
+cc_library {
+    name: "android.hardware.health-translate-ndk",
+    vendor_available: true,
+    srcs: ["android/hardware/health/translate-ndk.cpp"],
+    shared_libs: [
+        "libbinder_ndk",
+        "libhidlbase",
+        "android.hardware.health-V1-ndk",
+        "android.hardware.health@2.0",
+        "android.hardware.health@2.1",
+    ],
+    export_include_dirs: ["include"],
+    export_shared_lib_headers: [
+        "android.hardware.health@2.0",
+        "android.hardware.health@2.1",
+    ],
+}
+
+java_library {
+    name: "android.hardware.health-translate-java",
+    srcs: ["android/hardware/health/Translate.java"],
+    libs: [
+        "android.hardware.health-V1-java",
+        "android.hardware.health-V2.0-java",
+        "android.hardware.health-V2.1-java",
+    ],
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryCapacityLevel.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryCapacityLevel.aidl
new file mode 100644
index 0000000..e543886
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryCapacityLevel.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@Backing(type="int") @VintfStability
+enum BatteryCapacityLevel {
+  UNSUPPORTED = -1,
+  UNKNOWN = 0,
+  CRITICAL = 1,
+  LOW = 2,
+  NORMAL = 3,
+  HIGH = 4,
+  FULL = 5,
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryHealth.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryHealth.aidl
new file mode 100644
index 0000000..4ce7952
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryHealth.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@Backing(type="int") @VintfStability
+enum BatteryHealth {
+  UNKNOWN = 1,
+  GOOD = 2,
+  OVERHEAT = 3,
+  DEAD = 4,
+  OVER_VOLTAGE = 5,
+  UNSPECIFIED_FAILURE = 6,
+  COLD = 7,
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryStatus.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryStatus.aidl
new file mode 100644
index 0000000..340b2ec
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryStatus.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@Backing(type="int") @VintfStability
+enum BatteryStatus {
+  UNKNOWN = 1,
+  CHARGING = 2,
+  DISCHARGING = 3,
+  NOT_CHARGING = 4,
+  FULL = 5,
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/DiskStats.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/DiskStats.aidl
new file mode 100644
index 0000000..5aa5890
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/DiskStats.aidl
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@VintfStability
+parcelable DiskStats {
+  long reads;
+  long readMerges;
+  long readSectors;
+  long readTicks;
+  long writes;
+  long writeMerges;
+  long writeSectors;
+  long writeTicks;
+  long ioInFlight;
+  long ioTicks;
+  long ioInQueue;
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HealthInfo.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HealthInfo.aidl
new file mode 100644
index 0000000..34a87a6
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HealthInfo.aidl
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@VintfStability
+parcelable HealthInfo {
+  boolean chargerAcOnline;
+  boolean chargerUsbOnline;
+  boolean chargerWirelessOnline;
+  int maxChargingCurrentMicroamps;
+  int maxChargingVoltageMicrovolts;
+  android.hardware.health.BatteryStatus batteryStatus;
+  android.hardware.health.BatteryHealth batteryHealth;
+  boolean batteryPresent;
+  int batteryLevel;
+  int batteryVoltageMillivolts;
+  int batteryTemperatureTenthsCelsius;
+  int batteryCurrentMicroamps;
+  int batteryCycleCount;
+  int batteryFullChargeUah;
+  int batteryChargeCounterUah;
+  String batteryTechnology;
+  int batteryCurrentAverageMicroamps;
+  android.hardware.health.DiskStats[] diskStats;
+  android.hardware.health.StorageInfo[] storageInfos;
+  android.hardware.health.BatteryCapacityLevel batteryCapacityLevel;
+  long batteryChargeTimeToFullNowSeconds;
+  int batteryFullChargeDesignCapacityUah;
+  const int BATTERY_CHARGE_TIME_TO_FULL_NOW_SECONDS_UNSUPPORTED = -1;
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealth.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealth.aidl
new file mode 100644
index 0000000..7016ae4
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealth.aidl
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@VintfStability
+interface IHealth {
+  void registerCallback(in android.hardware.health.IHealthInfoCallback callback);
+  void unregisterCallback(in android.hardware.health.IHealthInfoCallback callback);
+  void update();
+  int getChargeCounterUah();
+  int getCurrentNowMicroamps();
+  int getCurrentAverageMicroamps();
+  int getCapacity();
+  long getEnergyCounterNwh();
+  android.hardware.health.BatteryStatus getChargeStatus();
+  android.hardware.health.StorageInfo[] getStorageInfo();
+  android.hardware.health.DiskStats[] getDiskStats();
+  android.hardware.health.HealthInfo getHealthInfo();
+  const int STATUS_UNKNOWN = 2;
+  const int STATUS_CALLBACK_DIED = 4;
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealthInfoCallback.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealthInfoCallback.aidl
new file mode 100644
index 0000000..1b6366f
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealthInfoCallback.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@VintfStability
+interface IHealthInfoCallback {
+  oneway void healthInfoChanged(in android.hardware.health.HealthInfo info);
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/StorageInfo.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/StorageInfo.aidl
new file mode 100644
index 0000000..eaae5a6
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/StorageInfo.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@VintfStability
+parcelable StorageInfo {
+  int eol;
+  int lifetimeA;
+  int lifetimeB;
+  String version;
+}
diff --git a/health/aidl/android/hardware/health/BatteryCapacityLevel.aidl b/health/aidl/android/hardware/health/BatteryCapacityLevel.aidl
new file mode 100644
index 0000000..0c26fa2
--- /dev/null
+++ b/health/aidl/android/hardware/health/BatteryCapacityLevel.aidl
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+/**
+ * Battery capacity level. This enum provides additional information along side
+ * with the battery capacity.
+ * Clients of this HAL must use this value before inferring it from the
+ * battery capacity.
+ */
+@VintfStability
+@Backing(type="int")
+enum BatteryCapacityLevel {
+    /**
+     * Battery capacity level is unsupported.
+     * Battery capacity level must be set to this value if and only if the
+     * implementation is unsupported.
+     */
+    UNSUPPORTED = -1,
+    /**
+     * Battery capacity level is unknown.
+     * Battery capacity level must be set to this value if and only if battery
+     * is not present or the battery capacity level is unknown/uninitialized.
+     */
+    UNKNOWN,
+    /**
+     * Battery is at critical level. The Android framework must schedule a
+     * shutdown when it sees this value from the HAL.
+     */
+    CRITICAL,
+    /**
+     * Battery is low. The Android framework may limit the performance of
+     * the device when it sees this value from the HAL.
+     */
+    LOW,
+    /**
+     * Battery level is normal.
+     */
+    NORMAL,
+    /**
+     * Battery level is high.
+     */
+    HIGH,
+    /**
+     * Battery is full. It must be set to FULL if and only if battery level is
+     * 100.
+     */
+    FULL,
+}
diff --git a/health/aidl/android/hardware/health/BatteryHealth.aidl b/health/aidl/android/hardware/health/BatteryHealth.aidl
new file mode 100644
index 0000000..2b6e51f
--- /dev/null
+++ b/health/aidl/android/hardware/health/BatteryHealth.aidl
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+/**
+ * Possible values for Battery Health.
+ * Note: These are currently in sync with BatteryManager and must not
+ * be extended / altered.
+ */
+@VintfStability
+@Backing(type="int")
+enum BatteryHealth {
+    UNKNOWN = 1,
+    GOOD = 2,
+    OVERHEAT = 3,
+    DEAD = 4,
+    OVER_VOLTAGE = 5,
+    /**
+     * Battery experienced an unknown/unspecified failure.
+     */
+    UNSPECIFIED_FAILURE = 6,
+    COLD = 7,
+}
diff --git a/health/aidl/android/hardware/health/BatteryStatus.aidl b/health/aidl/android/hardware/health/BatteryStatus.aidl
new file mode 100644
index 0000000..774b28e
--- /dev/null
+++ b/health/aidl/android/hardware/health/BatteryStatus.aidl
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+/**
+ * Possible values for Battery Status.
+ * Note: These are currently in sync with BatteryManager and must not
+ * be extended / altered.
+ */
+@VintfStability
+@Backing(type="int")
+enum BatteryStatus {
+    UNKNOWN = 1,
+    CHARGING = 2,
+    DISCHARGING = 3,
+    /**
+     * Battery is *not* charging - special case when charger is present
+     * but battery isn't charging
+     */
+    NOT_CHARGING = 4,
+    FULL = 5,
+}
diff --git a/health/aidl/android/hardware/health/DiskStats.aidl b/health/aidl/android/hardware/health/DiskStats.aidl
new file mode 100644
index 0000000..532cbfd
--- /dev/null
+++ b/health/aidl/android/hardware/health/DiskStats.aidl
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+/*
+ * Disk statistics since boot.
+ *
+ * See {@code struct disk_stats} in {@code storaged} for interpretations of these fields.
+ *
+ * All integers in this struct must be interpreted as unsigned.
+ */
+@VintfStability
+parcelable DiskStats {
+    /**
+     * Number of reads processed.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long reads;
+    /**
+     * number of read I/Os merged with in-queue I/Os.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long readMerges;
+    /**
+     * number of sectors read.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long readSectors;
+    /**
+     * total wait time for read requests.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long readTicks;
+    /**
+     * number of writes processed.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long writes;
+    /**
+     * number of writes merged with in-queue I/Os.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long writeMerges;
+    /**
+     * number of sectors written.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long writeSectors;
+    /**
+     * total wait time for write requests.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long writeTicks;
+    /**
+     * number of I/Os currently in flight.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long ioInFlight;
+    /**
+     * total time this block device has been active.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long ioTicks;
+    /**
+     * total wait time for all requests.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long ioInQueue;
+}
diff --git a/health/aidl/android/hardware/health/HealthInfo.aidl b/health/aidl/android/hardware/health/HealthInfo.aidl
new file mode 100644
index 0000000..504e218
--- /dev/null
+++ b/health/aidl/android/hardware/health/HealthInfo.aidl
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+import android.hardware.health.BatteryCapacityLevel;
+import android.hardware.health.BatteryHealth;
+import android.hardware.health.BatteryStatus;
+import android.hardware.health.DiskStats;
+import android.hardware.health.StorageInfo;
+
+/**
+ * Health Information.
+ */
+@VintfStability
+parcelable HealthInfo {
+    /**
+     * AC charger state - 'true' if online
+     */
+    boolean chargerAcOnline;
+    /**
+     * USB charger state - 'true' if online
+     */
+    boolean chargerUsbOnline;
+    /**
+     * Wireless charger state - 'true' if online
+     */
+    boolean chargerWirelessOnline;
+    /**
+     * Maximum charging current supported by charger in µA
+     */
+    int maxChargingCurrentMicroamps;
+    /**
+     * Maximum charging voltage supported by charger in µV
+     */
+    int maxChargingVoltageMicrovolts;
+
+    android.hardware.health.BatteryStatus batteryStatus;
+
+    android.hardware.health.BatteryHealth batteryHealth;
+    /**
+     * 'true' if battery is present
+     */
+    boolean batteryPresent;
+    /**
+     * Remaining battery capacity in percent
+     */
+    int batteryLevel;
+    /**
+     * Instantaneous battery voltage in millivolts (mV).
+     *
+     * Historically, the unit of this field is microvolts (µV), but all
+     * clients and implementations uses millivolts in practice, making it
+     * the de-facto standard.
+     */
+    int batteryVoltageMillivolts;
+    /**
+     * Instantaneous battery temperature in tenths of degrees Celsius
+     */
+    int batteryTemperatureTenthsCelsius;
+    /**
+     * Instantaneous battery current in µA
+     */
+    int batteryCurrentMicroamps;
+    /**
+     * Battery charge cycle count
+     */
+    int batteryCycleCount;
+    /**
+     * Battery charge value when it is considered to be "full" in µA-h
+     */
+    int batteryFullChargeUah;
+    /**
+     * Instantaneous battery capacity in µA-h
+     */
+    int batteryChargeCounterUah;
+    /**
+     * Battery technology, e.g. "Li-ion, Li-Poly" etc.
+     */
+    String batteryTechnology;
+    /**
+     * Average battery current in µA. Will be 0 if unsupported.
+     */
+    int batteryCurrentAverageMicroamps;
+    /**
+     * Disk Statistics. Will be an empty vector if unsupported.
+     */
+    DiskStats[] diskStats;
+    /**
+     * Information on storage devices. Will be an empty vector if
+     * unsupported.
+     */
+    StorageInfo[] storageInfos;
+    /**
+     * Battery capacity level. See {@link BatteryCapacityLevel} for more details.
+     */
+    BatteryCapacityLevel batteryCapacityLevel;
+
+    /**
+     * Value of {@link #batteryChargeTimeToFullNowSeconds} if it is not
+     * supported.
+     */
+    const int BATTERY_CHARGE_TIME_TO_FULL_NOW_SECONDS_UNSUPPORTED = -1;
+    /**
+     * Estimated time to fully charge the device (in seconds).
+     * Value must be BATTERY_CHARGE_TIME_TO_FULL_NOW_SECONDS_UNSUPPORTED if and
+     * only if the implementation is unsupported.
+     * Value must be 0 if and only if batteryCapacityLevel is FULL or UNKNOWN.
+     * Otherwise, value must be positive.
+     */
+    long batteryChargeTimeToFullNowSeconds;
+    /**
+     * Estimated battery full charge design capacity (in microamp hours, µAh).
+     * Value must be 0 if unknown.
+     * Value must be greater than 100 000 µAh if known.
+     * Value must be less than 100 000 000 µAh if known.
+     */
+    int batteryFullChargeDesignCapacityUah;
+}
diff --git a/health/aidl/android/hardware/health/IHealth.aidl b/health/aidl/android/hardware/health/IHealth.aidl
new file mode 100644
index 0000000..d541eca
--- /dev/null
+++ b/health/aidl/android/hardware/health/IHealth.aidl
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+import android.hardware.health.BatteryStatus;
+import android.hardware.health.DiskStats;
+import android.hardware.health.HealthInfo;
+import android.hardware.health.IHealthInfoCallback;
+import android.hardware.health.StorageInfo;
+
+/**
+ * IHealth manages health info and posts events on registered callbacks.
+ *
+ * Implementations must send health info to all callbacks periodically.
+ */
+@VintfStability
+interface IHealth {
+    /** Status code for function. The operation encounters an unknown error. */
+    const int STATUS_UNKNOWN = 2;
+
+    /**
+     * Status code for function.
+     * A registered callback object is dead.
+     */
+    const int STATUS_CALLBACK_DIED = 4;
+
+    /**
+     * Register a callback for any health info events.
+     *
+     * Registering a new callback must not unregister the old one; the old
+     * callback remains registered until one of the following happens:
+     * - A client explicitly calls {@link #unregisterCallback} to unregister it.
+     * - The client process that hosts the callback dies.
+     *
+     * @param callback the callback to register.
+     * @return If error, return service specific error with code STATUS_UNKNOWN.
+     */
+    void registerCallback(in IHealthInfoCallback callback);
+
+    /**
+     * Explicitly unregister a callback that is previously registered through
+     * {@link #registerCallback}.
+     *
+     * @param callback the callback to unregister.
+     * @return If error:
+     *         - Return exception with code EX_ILLEGAL_ARGUMENT
+     *           if callback is not registered previously,
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for other errors.
+     */
+    void unregisterCallback(in IHealthInfoCallback callback);
+
+    /**
+     * Schedule update.
+     *
+     * When update() is called, the service must notify all registered callbacks
+     * with the most recent health info.
+     *
+     * @return If error, return service specific error with code:
+     *         - STATUS_CALLBACK_DIED if any registered callback is dead,
+     *         - STATUS_UNKNOWN for other errors.
+     */
+    void update();
+
+    /**
+     * Get battery capacity in microampere-hours(µAh).
+     *
+     * @return battery capacity if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported
+     *           (e.g. the file that stores this property does not exist),
+     *         - Retrurn service specific error with code
+     *           STATUS_UNKNOWN for other errors.
+     */
+    int getChargeCounterUah();
+
+    /**
+     * Get instantaneous battery current in microamperes(µA).
+     *
+     * Positive values indicate net current entering the battery from a charge
+     * source, negative values indicate net current discharging from the
+     * battery.
+     *
+     * @return instantaneous battery current if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported
+     *                 (e.g. the file that stores this property does not exist),
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for for other errors.
+     */
+    int getCurrentNowMicroamps();
+
+    /**
+     * Get average battery current in microamperes(µA).
+     *
+     * Positive values indicate net current entering the battery from a charge
+     * source, negative values indicate net current discharging from the
+     * battery. The time period over which the average is computed may depend on
+     * the fuel gauge hardware and its configuration.
+     *
+     * @return average battery current if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported
+     *                 (e.g. the file that stores this property does not exist),
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for for other errors.
+     */
+    int getCurrentAverageMicroamps();
+
+    /**
+     * Get remaining battery capacity percentage of total capacity
+     * (with no fractional part).
+     *
+     * @return remaining battery capacity if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported
+     *                 (e.g. the file that stores this property does not exist),
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for for other errors.
+     */
+    int getCapacity();
+
+    /**
+     * Get battery remaining energy in nanowatt-hours.
+     *
+     * @return remaining energy if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported,
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for for other errors.
+     */
+    long getEnergyCounterNwh();
+
+    /**
+     * Get battery charge status.
+     *
+     * @return charge status if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported
+     *                 (e.g. the file that stores this property does not exist),
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for other errors.
+     */
+    BatteryStatus getChargeStatus();
+
+    /**
+     * Get storage info.
+     *
+     * @return vector of StorageInfo structs if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported,
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for other errors.
+     */
+    StorageInfo[] getStorageInfo();
+
+    /**
+     * Gets disk statistics (number of reads/writes processed, number of I/O
+     * operations in flight etc).
+     *
+     * @return vector of disk statistics if successful.
+     *         The mapping is index 0->sda, 1->sdb and so on.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported,
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for other errors.
+     */
+    DiskStats[] getDiskStats();
+
+    /**
+     * Get Health Information.
+     *
+     * @return Health information if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this API is not supported,
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for for other errors.
+     */
+    HealthInfo getHealthInfo();
+}
diff --git a/health/aidl/android/hardware/health/IHealthInfoCallback.aidl b/health/aidl/android/hardware/health/IHealthInfoCallback.aidl
new file mode 100644
index 0000000..e9720fa
--- /dev/null
+++ b/health/aidl/android/hardware/health/IHealthInfoCallback.aidl
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+import android.hardware.health.HealthInfo;
+
+/**
+ * IHealthInfoCallback is the updated callback interface to
+ * {@link IHealth#registerCallback}.
+ */
+@VintfStability
+interface IHealthInfoCallback {
+    /**
+     * An implementation of IHealth must call healthInfoChanged on all
+     * registered callbacks after health info changes.
+     * @param info the updated HealthInfo
+     */
+    oneway void healthInfoChanged(in HealthInfo info);
+}
diff --git a/health/aidl/android/hardware/health/StorageInfo.aidl b/health/aidl/android/hardware/health/StorageInfo.aidl
new file mode 100644
index 0000000..4c4dace
--- /dev/null
+++ b/health/aidl/android/hardware/health/StorageInfo.aidl
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+/*
+ * Information on storage device including life time estimates, end of life
+ * information and other attributes.
+ *
+ * All integers in this struct must be interpreted as non-negative.
+ */
+@VintfStability
+parcelable StorageInfo {
+    /**
+     * pre-eol (end of life) information. Follows JEDEC standard No.84-B50.
+     *
+     * Value must be interpreted as non-negative.
+     */
+    int eol;
+    /**
+     * device life time estimation (type A). Follows JEDEC standard No.84-B50.
+     *
+     * Value must be interpreted as non-negative.
+     */
+    int lifetimeA;
+    /**
+     * device life time estimation (type B). Follows JEDEC standard No.84-B50.
+     *
+     * Value must be interpreted as non-negative.
+     */
+    int lifetimeB;
+    /**
+     * version string
+     */
+    String version;
+}
diff --git a/health/aidl/android/hardware/health/Translate.java b/health/aidl/android/hardware/health/Translate.java
new file mode 100644
index 0000000..c8ace1c
--- /dev/null
+++ b/health/aidl/android/hardware/health/Translate.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+public class Translate {
+    static public android.hardware.health.StorageInfo h2aTranslate(
+            android.hardware.health.V2_0.StorageInfo in) {
+        android.hardware.health.StorageInfo out = new android.hardware.health.StorageInfo();
+        out.eol = in.eol;
+        out.lifetimeA = in.lifetimeA;
+        out.lifetimeB = in.lifetimeB;
+        out.version = in.version;
+        return out;
+    }
+
+    static public android.hardware.health.DiskStats h2aTranslate(
+            android.hardware.health.V2_0.DiskStats in) {
+        android.hardware.health.DiskStats out = new android.hardware.health.DiskStats();
+        out.reads = in.reads;
+        out.readMerges = in.readMerges;
+        out.readSectors = in.readSectors;
+        out.readTicks = in.readTicks;
+        out.writes = in.writes;
+        out.writeMerges = in.writeMerges;
+        out.writeSectors = in.writeSectors;
+        out.writeTicks = in.writeTicks;
+        out.ioInFlight = in.ioInFlight;
+        out.ioTicks = in.ioTicks;
+        out.ioInQueue = in.ioInQueue;
+        return out;
+    }
+
+    static public android.hardware.health.HealthInfo h2aTranslate(
+            android.hardware.health.V2_1.HealthInfo in) {
+        android.hardware.health.HealthInfo out = new android.hardware.health.HealthInfo();
+        out.chargerAcOnline = in.legacy.legacy.chargerAcOnline;
+        out.chargerUsbOnline = in.legacy.legacy.chargerUsbOnline;
+        out.chargerWirelessOnline = in.legacy.legacy.chargerWirelessOnline;
+        out.maxChargingCurrentMicroamps = in.legacy.legacy.maxChargingCurrent;
+        out.maxChargingVoltageMicrovolts = in.legacy.legacy.maxChargingVoltage;
+        out.batteryStatus = in.legacy.legacy.batteryStatus;
+        out.batteryHealth = in.legacy.legacy.batteryHealth;
+        out.batteryPresent = in.legacy.legacy.batteryPresent;
+        out.batteryLevel = in.legacy.legacy.batteryLevel;
+        out.batteryVoltageMillivolts = in.legacy.legacy.batteryVoltage;
+        out.batteryTemperatureTenthsCelsius = in.legacy.legacy.batteryTemperature;
+        out.batteryCurrentMicroamps = in.legacy.legacy.batteryCurrent;
+        out.batteryCycleCount = in.legacy.legacy.batteryCycleCount;
+        out.batteryFullChargeUah = in.legacy.legacy.batteryFullCharge;
+        out.batteryChargeCounterUah = in.legacy.legacy.batteryChargeCounter;
+        out.batteryTechnology = in.legacy.legacy.batteryTechnology;
+        out.batteryCurrentAverageMicroamps = in.legacy.batteryCurrentAverage;
+        out.diskStats = new android.hardware.health.DiskStats[in.legacy.diskStats.size()];
+        for (int i = 0; i < in.legacy.diskStats.size(); i++) {
+            out.diskStats[i] = h2aTranslate(in.legacy.diskStats.get(i));
+        }
+        out.storageInfos = new android.hardware.health.StorageInfo[in.legacy.storageInfos.size()];
+        for (int i = 0; i < in.legacy.storageInfos.size(); i++) {
+            out.storageInfos[i] = h2aTranslate(in.legacy.storageInfos.get(i));
+        }
+        out.batteryCapacityLevel = in.batteryCapacityLevel;
+        out.batteryChargeTimeToFullNowSeconds = in.batteryChargeTimeToFullNowSeconds;
+        out.batteryFullChargeDesignCapacityUah = in.batteryFullChargeDesignCapacityUah;
+        return out;
+    }
+}
diff --git a/health/aidl/android/hardware/health/translate-ndk.cpp b/health/aidl/android/hardware/health/translate-ndk.cpp
new file mode 100644
index 0000000..7fe6ced
--- /dev/null
+++ b/health/aidl/android/hardware/health/translate-ndk.cpp
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android/hardware/health/translate-ndk.h"
+
+namespace android::h2a {
+
+static_assert(aidl::android::hardware::health::BatteryStatus::UNKNOWN ==
+              static_cast<aidl::android::hardware::health::BatteryStatus>(
+                      ::android::hardware::health::V1_0::BatteryStatus::UNKNOWN));
+static_assert(aidl::android::hardware::health::BatteryStatus::CHARGING ==
+              static_cast<aidl::android::hardware::health::BatteryStatus>(
+                      ::android::hardware::health::V1_0::BatteryStatus::CHARGING));
+static_assert(aidl::android::hardware::health::BatteryStatus::DISCHARGING ==
+              static_cast<aidl::android::hardware::health::BatteryStatus>(
+                      ::android::hardware::health::V1_0::BatteryStatus::DISCHARGING));
+static_assert(aidl::android::hardware::health::BatteryStatus::NOT_CHARGING ==
+              static_cast<aidl::android::hardware::health::BatteryStatus>(
+                      ::android::hardware::health::V1_0::BatteryStatus::NOT_CHARGING));
+static_assert(aidl::android::hardware::health::BatteryStatus::FULL ==
+              static_cast<aidl::android::hardware::health::BatteryStatus>(
+                      ::android::hardware::health::V1_0::BatteryStatus::FULL));
+
+static_assert(aidl::android::hardware::health::BatteryHealth::UNKNOWN ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::UNKNOWN));
+static_assert(aidl::android::hardware::health::BatteryHealth::GOOD ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::GOOD));
+static_assert(aidl::android::hardware::health::BatteryHealth::OVERHEAT ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::OVERHEAT));
+static_assert(aidl::android::hardware::health::BatteryHealth::DEAD ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::DEAD));
+static_assert(aidl::android::hardware::health::BatteryHealth::OVER_VOLTAGE ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::OVER_VOLTAGE));
+static_assert(aidl::android::hardware::health::BatteryHealth::UNSPECIFIED_FAILURE ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::UNSPECIFIED_FAILURE));
+static_assert(aidl::android::hardware::health::BatteryHealth::COLD ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::COLD));
+
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::UNSUPPORTED ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::UNSUPPORTED));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::UNKNOWN ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::UNKNOWN));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::CRITICAL ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::CRITICAL));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::LOW ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::LOW));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::NORMAL ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::NORMAL));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::HIGH ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::HIGH));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::FULL ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::FULL));
+
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_0::StorageInfo& in,
+        aidl::android::hardware::health::StorageInfo* out) {
+    out->eol = in.eol;
+    out->lifetimeA = in.lifetimeA;
+    out->lifetimeB = in.lifetimeB;
+    out->version = in.version;
+    return true;
+}
+
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_0::DiskStats& in,
+        aidl::android::hardware::health::DiskStats* out) {
+    out->reads = static_cast<int64_t>(in.reads);
+    out->readMerges = static_cast<int64_t>(in.readMerges);
+    out->readSectors = static_cast<int64_t>(in.readSectors);
+    out->readTicks = static_cast<int64_t>(in.readTicks);
+    out->writes = static_cast<int64_t>(in.writes);
+    out->writeMerges = static_cast<int64_t>(in.writeMerges);
+    out->writeSectors = static_cast<int64_t>(in.writeSectors);
+    out->writeTicks = static_cast<int64_t>(in.writeTicks);
+    out->ioInFlight = static_cast<int64_t>(in.ioInFlight);
+    out->ioTicks = static_cast<int64_t>(in.ioTicks);
+    out->ioInQueue = static_cast<int64_t>(in.ioInQueue);
+    return true;
+}
+
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_1::HealthInfo& in,
+        aidl::android::hardware::health::HealthInfo* out) {
+    out->chargerAcOnline = static_cast<bool>(in.legacy.legacy.chargerAcOnline);
+    out->chargerUsbOnline = static_cast<bool>(in.legacy.legacy.chargerUsbOnline);
+    out->chargerWirelessOnline = static_cast<bool>(in.legacy.legacy.chargerWirelessOnline);
+    out->maxChargingCurrentMicroamps = static_cast<int32_t>(in.legacy.legacy.maxChargingCurrent);
+    out->maxChargingVoltageMicrovolts = static_cast<int32_t>(in.legacy.legacy.maxChargingVoltage);
+    out->batteryStatus = static_cast<aidl::android::hardware::health::BatteryStatus>(
+            in.legacy.legacy.batteryStatus);
+    out->batteryHealth = static_cast<aidl::android::hardware::health::BatteryHealth>(
+            in.legacy.legacy.batteryHealth);
+    out->batteryPresent = static_cast<bool>(in.legacy.legacy.batteryPresent);
+    out->batteryLevel = static_cast<int32_t>(in.legacy.legacy.batteryLevel);
+    out->batteryVoltageMillivolts = static_cast<int32_t>(in.legacy.legacy.batteryVoltage);
+    out->batteryTemperatureTenthsCelsius =
+            static_cast<int32_t>(in.legacy.legacy.batteryTemperature);
+    out->batteryCurrentMicroamps = static_cast<int32_t>(in.legacy.legacy.batteryCurrent);
+    out->batteryCycleCount = static_cast<int32_t>(in.legacy.legacy.batteryCycleCount);
+    out->batteryFullChargeUah = static_cast<int32_t>(in.legacy.legacy.batteryFullCharge);
+    out->batteryChargeCounterUah = static_cast<int32_t>(in.legacy.legacy.batteryChargeCounter);
+    out->batteryTechnology = in.legacy.legacy.batteryTechnology;
+    out->batteryCurrentAverageMicroamps = static_cast<int32_t>(in.legacy.batteryCurrentAverage);
+    out->diskStats.clear();
+    out->diskStats.resize(in.legacy.diskStats.size());
+    for (size_t i = 0; i < in.legacy.diskStats.size(); ++i)
+        if (!translate(in.legacy.diskStats[i], &out->diskStats[i])) return false;
+    out->storageInfos.clear();
+    out->storageInfos.resize(in.legacy.storageInfos.size());
+    for (size_t i = 0; i < in.legacy.storageInfos.size(); ++i)
+        if (!translate(in.legacy.storageInfos[i], &out->storageInfos[i])) return false;
+    out->batteryCapacityLevel = static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+            in.batteryCapacityLevel);
+    out->batteryChargeTimeToFullNowSeconds =
+            static_cast<int64_t>(in.batteryChargeTimeToFullNowSeconds);
+    out->batteryFullChargeDesignCapacityUah =
+            static_cast<int32_t>(in.batteryFullChargeDesignCapacityUah);
+    return true;
+}
+
+}  // namespace android::h2a
diff --git a/health/aidl/include/android/hardware/health/translate-ndk.h b/health/aidl/include/android/hardware/health/translate-ndk.h
new file mode 100644
index 0000000..2f8fe04
--- /dev/null
+++ b/health/aidl/include/android/hardware/health/translate-ndk.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/health/BatteryCapacityLevel.h>
+#include <aidl/android/hardware/health/DiskStats.h>
+#include <aidl/android/hardware/health/HealthInfo.h>
+#include <aidl/android/hardware/health/StorageInfo.h>
+#include <android/hardware/health/2.0/types.h>
+#include <android/hardware/health/2.1/types.h>
+#include <limits>
+
+namespace android::h2a {
+
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_0::StorageInfo& in,
+        aidl::android::hardware::health::StorageInfo* out);
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_0::DiskStats& in,
+        aidl::android::hardware::health::DiskStats* out);
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_1::HealthInfo& in,
+        aidl::android::hardware::health::HealthInfo* out);
+
+}  // namespace android::h2a