diff --git a/libs/binder/IBatteryStats.cpp b/libs/binder/IBatteryStats.cpp
new file mode 100644
index 0000000..6469b08
--- /dev/null
+++ b/libs/binder/IBatteryStats.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2013 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 <binder/IBatteryStats.h>
+
+#include <utils/Debug.h>
+#include <utils/Log.h>
+#include <binder/Parcel.h>
+#include <utils/String8.h>
+
+#include <private/binder/Static.h>
+
+namespace android {
+
+// ----------------------------------------------------------------------
+
+class BpBatteryStats : public BpInterface<IBatteryStats>
+{
+public:
+    BpBatteryStats(const sp<IBinder>& impl)
+        : BpInterface<IBatteryStats>(impl)
+    {
+    }
+
+    virtual void noteStartSensor(int uid, int sensor) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IBatteryStats::getInterfaceDescriptor());
+        data.writeInt32(uid);
+        data.writeInt32(sensor);
+        remote()->transact(NOTE_START_SENSOR_TRANSACTION, data, &reply);
+    }
+
+    virtual void noteStopSensor(int uid, int sensor) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IBatteryStats::getInterfaceDescriptor());
+        data.writeInt32(uid);
+        data.writeInt32(sensor);
+        remote()->transact(NOTE_STOP_SENSOR_TRANSACTION, data, &reply);
+    }
+};
+
+IMPLEMENT_META_INTERFACE(BatteryStats, "com.android.internal.app.IBatteryStats");
+
+// ----------------------------------------------------------------------
+
+status_t BnBatteryStats::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    switch(code) {
+        case NOTE_START_SENSOR_TRANSACTION: {
+            CHECK_INTERFACE(IBatteryStats, data, reply);
+            int uid = data.readInt32();
+            int sensor = data.readInt32();
+            noteStartSensor(uid, sensor);
+            reply->writeNoException();
+            return NO_ERROR;
+        } break;
+        case NOTE_STOP_SENSOR_TRANSACTION: {
+            CHECK_INTERFACE(IBatteryStats, data, reply);
+            int uid = data.readInt32();
+            int sensor = data.readInt32();
+            noteStopSensor(uid, sensor);
+            reply->writeNoException();
+            return NO_ERROR;
+        } break;
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+}; // namespace android