diff --git a/core/api/current.txt b/core/api/current.txt
index a9ee34f..2d8db84 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -32570,6 +32570,13 @@
     method public boolean isCharging();
     field public static final String ACTION_CHARGING = "android.os.action.CHARGING";
     field public static final String ACTION_DISCHARGING = "android.os.action.DISCHARGING";
+    field @FlaggedApi("android.os.battery_part_status_api") public static final int BATTERY_CAPACITY_LEVEL_CRITICAL = 1; // 0x1
+    field @FlaggedApi("android.os.battery_part_status_api") public static final int BATTERY_CAPACITY_LEVEL_FULL = 5; // 0x5
+    field @FlaggedApi("android.os.battery_part_status_api") public static final int BATTERY_CAPACITY_LEVEL_HIGH = 4; // 0x4
+    field @FlaggedApi("android.os.battery_part_status_api") public static final int BATTERY_CAPACITY_LEVEL_LOW = 2; // 0x2
+    field @FlaggedApi("android.os.battery_part_status_api") public static final int BATTERY_CAPACITY_LEVEL_NORMAL = 3; // 0x3
+    field @FlaggedApi("android.os.battery_part_status_api") public static final int BATTERY_CAPACITY_LEVEL_UNKNOWN = 0; // 0x0
+    field @FlaggedApi("android.os.battery_part_status_api") public static final int BATTERY_CAPACITY_LEVEL_UNSUPPORTED = -1; // 0xffffffff
     field public static final int BATTERY_HEALTH_COLD = 7; // 0x7
     field public static final int BATTERY_HEALTH_DEAD = 4; // 0x4
     field public static final int BATTERY_HEALTH_GOOD = 2; // 0x2
@@ -32594,6 +32601,7 @@
     field public static final int BATTERY_STATUS_NOT_CHARGING = 4; // 0x4
     field public static final int BATTERY_STATUS_UNKNOWN = 1; // 0x1
     field public static final String EXTRA_BATTERY_LOW = "battery_low";
+    field @FlaggedApi("android.os.battery_part_status_api") public static final String EXTRA_CAPACITY_LEVEL = "android.os.extra.CAPACITY_LEVEL";
     field public static final String EXTRA_CHARGING_STATUS = "android.os.extra.CHARGING_STATUS";
     field public static final String EXTRA_CYCLE_COUNT = "android.os.extra.CYCLE_COUNT";
     field public static final String EXTRA_HEALTH = "health";
diff --git a/core/java/android/os/BatteryManager.java b/core/java/android/os/BatteryManager.java
index f3efd89..8b267bf 100644
--- a/core/java/android/os/BatteryManager.java
+++ b/core/java/android/os/BatteryManager.java
@@ -141,6 +141,7 @@
     /**
      * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:
      * integer containing the charge counter present in the battery.
+     * It shows the available battery power in µAh
      * {@hide}
      */
      @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
@@ -166,6 +167,76 @@
     public static final String EXTRA_CHARGING_STATUS = "android.os.extra.CHARGING_STATUS";
 
     /**
+     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:
+     * Int value representing the battery's capacity level. These constants are key indicators of
+     * battery status and system capabilities, guiding power management decisions for both the
+     * system and apps:
+     * {@link #BATTERY_CAPACITY_LEVEL_UNSUPPORTED}: Feature not supported on this device.
+     * {@link #BATTERY_CAPACITY_LEVEL_UNKNOWN}: Battery status is unavailable or uninitialized.
+     * {@link #BATTERY_CAPACITY_LEVEL_CRITICAL}: Battery is critically low and the Android
+     * framework has been notified to schedule a shutdown by this value
+     * {@link #BATTERY_CAPACITY_LEVEL_LOW}: Android framework must limit background jobs to
+     * avoid impacting charging speed
+     * {@link #BATTERY_CAPACITY_LEVEL_NORMAL}: Battery level and charging rates are normal,
+     * battery temperature is within normal range and adapter power is enough to charge the
+     * battery at an acceptable rate. Android framework can run light background tasks without
+     * affecting charging performance severely.
+     * {@link #BATTERY_CAPACITY_LEVEL_HIGH}: Battery level is high, battery temperature is
+     * within normal range and adapter power is enough to charge the battery at an acceptable
+     * rate while running background loads. Android framework can run background tasks without
+     * affecting charging or battery performance.
+     * {@link #BATTERY_CAPACITY_LEVEL_FULL}: The battery is full, battery temperature is
+     * within normal range and adapter power is enough to sustain running background loads.
+     * Android framework can run background tasks without affecting the battery level or
+     * battery performance.
+     */
+
+    @FlaggedApi(FLAG_BATTERY_PART_STATUS_API)
+    public static final String EXTRA_CAPACITY_LEVEL = "android.os.extra.CAPACITY_LEVEL";
+
+    /**
+     * Battery capacity level is unsupported. @see EXTRA_CAPACITY_LEVEL
+     */
+    @FlaggedApi(FLAG_BATTERY_PART_STATUS_API)
+    public static final int BATTERY_CAPACITY_LEVEL_UNSUPPORTED = -1;
+
+    /**
+     * Battery capacity level is unknown. @see EXTRA_CAPACITY_LEVEL
+     */
+    @FlaggedApi(FLAG_BATTERY_PART_STATUS_API)
+    public static final int BATTERY_CAPACITY_LEVEL_UNKNOWN = 0;
+
+    /**
+     * Battery capacity level is critical. @see EXTRA_CAPACITY_LEVEL
+     */
+    @FlaggedApi(FLAG_BATTERY_PART_STATUS_API)
+    public static final int BATTERY_CAPACITY_LEVEL_CRITICAL = 1;
+
+    /**
+     * Battery capacity level is low. @see EXTRA_CAPACITY_LEVEL
+     */
+    @FlaggedApi(FLAG_BATTERY_PART_STATUS_API)
+    public static final int BATTERY_CAPACITY_LEVEL_LOW = 2;
+
+    /**
+     * Battery capacity level is normal. @see EXTRA_CAPACITY_LEVEL
+     */
+    @FlaggedApi(FLAG_BATTERY_PART_STATUS_API)
+    public static final int BATTERY_CAPACITY_LEVEL_NORMAL = 3;
+
+    /**
+     * Battery capacity level is high. @see EXTRA_CAPACITY_LEVEL
+     */
+    @FlaggedApi(FLAG_BATTERY_PART_STATUS_API)
+    public static final int BATTERY_CAPACITY_LEVEL_HIGH = 4;
+
+    /**
+     * Battery capacity level is full. @see EXTRA_CAPACITY_LEVEL
+     */
+    @FlaggedApi(FLAG_BATTERY_PART_STATUS_API)
+    public static final int BATTERY_CAPACITY_LEVEL_FULL = 5;
+
+    /**
      * Extra for {@link android.content.Intent#ACTION_BATTERY_LEVEL_CHANGED}:
      * Contains list of Bundles representing battery events
      * @hide
diff --git a/services/core/java/com/android/server/BatteryService.java b/services/core/java/com/android/server/BatteryService.java
index 2de4482..8891d8e 100644
--- a/services/core/java/com/android/server/BatteryService.java
+++ b/services/core/java/com/android/server/BatteryService.java
@@ -158,6 +158,7 @@
     private int mLastChargeCounter;
     private int mLastBatteryCycleCount;
     private int mLastChargingState;
+    private int mLastBatteryCapacityLevel;
     /**
      * The last seen charging policy. This requires the
      * {@link android.Manifest.permission#BATTERY_STATS} permission and should therefore not be
@@ -555,7 +556,8 @@
                         || mHealthInfo.batteryChargeCounterUah != mLastChargeCounter
                         || mInvalidCharger != mLastInvalidCharger
                         || mHealthInfo.batteryCycleCount != mLastBatteryCycleCount
-                        || mHealthInfo.chargingState != mLastChargingState)) {
+                        || mHealthInfo.chargingState != mLastChargingState
+                        || mHealthInfo.batteryCapacityLevel != mLastBatteryCapacityLevel)) {
 
             if (mPlugType != mLastPlugType) {
                 if (mLastPlugType == BATTERY_PLUGGED_NONE) {
@@ -739,6 +741,7 @@
             mLastInvalidCharger = mInvalidCharger;
             mLastBatteryCycleCount = mHealthInfo.batteryCycleCount;
             mLastChargingState = mHealthInfo.chargingState;
+            mLastBatteryCapacityLevel = mHealthInfo.batteryCapacityLevel;
         }
     }
 
@@ -772,6 +775,7 @@
         intent.putExtra(BatteryManager.EXTRA_CHARGE_COUNTER, mHealthInfo.batteryChargeCounterUah);
         intent.putExtra(BatteryManager.EXTRA_CYCLE_COUNT, mHealthInfo.batteryCycleCount);
         intent.putExtra(BatteryManager.EXTRA_CHARGING_STATUS, mHealthInfo.chargingState);
+        intent.putExtra(BatteryManager.EXTRA_CAPACITY_LEVEL, mHealthInfo.batteryCapacityLevel);
         if (DEBUG) {
             Slog.d(TAG, "Sending ACTION_BATTERY_CHANGED. scale:" + BATTERY_SCALE
                     + ", info:" + mHealthInfo.toString());
@@ -817,6 +821,7 @@
         event.putLong(BatteryManager.EXTRA_EVENT_TIMESTAMP, now);
         event.putInt(BatteryManager.EXTRA_CYCLE_COUNT, mHealthInfo.batteryCycleCount);
         event.putInt(BatteryManager.EXTRA_CHARGING_STATUS, mHealthInfo.chargingState);
+        event.putInt(BatteryManager.EXTRA_CAPACITY_LEVEL, mHealthInfo.batteryCapacityLevel);
 
         boolean queueWasEmpty = mBatteryLevelsEventQueue.isEmpty();
         mBatteryLevelsEventQueue.add(event);
@@ -1254,6 +1259,7 @@
                 pw.println("  technology: " + mHealthInfo.batteryTechnology);
                 pw.println("  Charging state: " + mHealthInfo.chargingState);
                 pw.println("  Charging policy: " + mHealthInfo.chargingPolicy);
+                pw.println("  Capacity level: " + mHealthInfo.batteryCapacityLevel);
             } else {
                 Shell shell = new Shell();
                 shell.exec(mBinderService, null, fd, null, args, null, new ResultReceiver(null));