diff --git a/api/@ohos.batteryInfo.d.ts b/api/@ohos.batteryInfo.d.ts
index 05b49542cab99d5f5d03e94aee99683880b67428..1ee587994c63a26d6219bbd1ec2f939c92ae1945 100644
--- a/api/@ohos.batteryInfo.d.ts
+++ b/api/@ohos.batteryInfo.d.ts
@@ -71,6 +71,40 @@ declare namespace batteryInfo {
      */
     const isBatteryPresent: boolean;
 
+    /**
+     * Obtain the battery capacity level of a device.
+     * @since 9
+     */
+    const batteryCapacityLevel: BatteryCapacityLevel;
+
+    /**
+     * Estimate the remaining time to fully charge, in ms.
+     * @since 9
+     */
+    const estimatedRemainingChargeTime: number;
+
+    /**
+     * Battery total energy of the current device, in mAh.
+     * @since 9
+     * @systemapi
+     */
+    const totalEnergy: number;
+
+    /**
+     * Battery immediate current of the current device, in mA.
+     * @since 9
+     * @systemapi
+     */
+
+    const nowCurrent: number;
+
+    /**
+     * Battery remaining energy of the current device, in mAh.
+     * @since 9
+     * @systemapi
+     */
+    const remainingEnergy: number;
+
     /**
      * Indicates the charger type of a device.
      *
@@ -167,6 +201,109 @@ declare namespace batteryInfo {
          */
         DEAD
     }
+
+    /**
+     * Indicates the battery capacity level a device.
+     *
+     * @syscap SystemCapability.PowerManager.BatteryManager.Core
+     * @since 9
+     */
+    export enum BatteryCapacityLevel {
+        /**
+         * The battery is in unknow capacity level.
+         * @since 9
+         */
+        LEVEL_NONE,
+        /**
+         * The battery is in full capacity level.
+         * @since 9
+         */
+        LEVEL_FULL,
+        /**
+         * The battery is in high capacity level.
+         * @since 9
+         */
+        LEVEL_HIGH,
+        /**
+         * The battery is in normal capacity level.
+         * @since 9
+         */
+        LEVEL_NORMAL,
+        /**
+         * The battery is in low capacity level.
+         * @since 9
+         */
+        LEVEL_LOW,
+        /**
+         * The battery is in critical low capacity level.
+         * @since 9
+         */
+        LEVEL_CRITICAL
+    }
+
+    /**
+     * Etra key code of common event COMMON_EVENT_BATTERY_CHANGED.
+     *
+     * @syscap SystemCapability.PowerManager.BatteryManager.Core
+     * @since 9
+     */
+    export enum CommonEventBatteryChangedCode {
+        /**
+         * Extra code of state of charge (SoC).
+         * @since 9
+         */
+        EXTRA_SOC = 0,
+        /**
+         * Extra code of voltage.
+         * @since 9
+         */
+        EXTRA_VOLTAGE,
+        /**
+         * Extra code of temperature.
+         * @since 9
+         */
+        EXTRA_TEMPERATURE,
+        /**
+         * Extra code of healthState.
+         * @since 9
+         */
+        EXTRA_HEALTH_STATE,
+        /**
+         * Extra code of pluggedType.
+         * @since 9
+         */
+        EXTRA_PLUGGED_TYPE,
+        /**
+         * Extra code of maxCurrent.
+         * @since 9
+         */
+        EXTRA_MAX_CURRENT,
+        /**
+         * Extra code of maxVoltage.
+         * @since 9
+         */
+        EXTRA_MAX_VOLTAGE,
+        /**
+         * Extra code of chargeState.
+         * @since 9
+         */
+        EXTRA_CHARGE_STATE,
+        /**
+         * Extra code of chargeCounter.
+         * @since 9
+         */
+        EXTRA_CHARGE_COUNTER,
+        /**
+         * Extra code of if battery is present.
+         * @since 9
+         */
+        EXTRA_PRESENT,
+        /**
+         * Extra code of technology.
+         * @since 9
+         */
+        EXTRA_TECHNOLOGY
+    }
 }
 export default batteryInfo;
 
diff --git a/api/@ohos.power.d.ts b/api/@ohos.power.d.ts
index 3b7db0d372d0086ee9a1aaafdb2ad92fc3cb5b55..ac894e25d58dcdcd94986361d8d25f78db2c3a2d 100644
--- a/api/@ohos.power.d.ts
+++ b/api/@ohos.power.d.ts
@@ -54,6 +54,73 @@ declare namespace power {
    */
   function isScreenOn(callback: AsyncCallback<boolean>): void;
   function isScreenOn(): Promise<boolean>;
+
+  /**
+   * Try to wakeup the device and let screen on.
+   *
+   * @param detail Indicates the detail information who request wakeup.
+   * @systemapi
+   * @since 9
+   */
+  function wakeupDevice(detail: string): void;
+
+  /**
+   * Try to suspend the device and let screen off.
+   *
+   * @systemapi
+   * @since 9
+   */
+  function suspendDevice(): void;
+
+  /**
+   * Get the power mode of the device.
+   *
+   * @return Returns the power mode {@link DevicePowerMode} of current device .
+   * @permission ohos.permission.POWER_OPTIMIZATION
+   * @since 9
+   */
+  function getPowerMode(callback: AsyncCallback<DevicePowerMode>): void;
+  function getPowerMode(): Promise<DevicePowerMode>;
+
+  /**
+   * To set the power mode of current device.
+   *
+   * @param mode Indicates power mode {@link DevicePowerMode} to set.
+   * @permission ohos.permission.POWER_OPTIMIZATION
+   * @systemapi
+   * @since 9
+   */
+  function setPowerMode(mode: DevicePowerMode, callback: AsyncCallback<void>): void;
+  function setPowerMode(mode: DevicePowerMode): Promise<void>;
+
+  /**
+   * Indicates the power mode of a device.
+   *
+   * @syscap SystemCapability.PowerManager.PowerManager.Core
+   * @since 9
+   */
+  export enum DevicePowerMode {
+	/**
+	 * Performance power mode
+	 * @since 9
+	 */
+	MODE_PERFORMANCE,
+	/**
+	 * Normal power mode
+	 * @since 9
+	 */
+	MODE_NORMAL,
+	/**
+	 * Power save mode
+	 * @since 9
+	 */
+	MODE_POWER_SAVE,
+	/**
+	 * Extreme power save mode
+	 * @since 9
+	 */
+	MODE_EXTREME_POWER_SAVE
+  }
 }
 export default power;