Can I use
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Battery Status API

- CR

Method to provide information about the battery status of the hosting device.

Chrome

  1. 4 - 36: Not supported
  2. 37: Disabled by default
  3. 38 - 116: Supported
  4. 117: Supported
  5. 118 - 120: Supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 116: Supported
  3. 117: Supported

Safari

  1. 3.1 - 16.6: Not supported
  2. 17.0: Not supported
  3. 17.1 - TP: Not supported

Firefox

  1. 2 - 9: Not supported
  2. 10 - 15: Partial support
  3. 16 - 42: Partial support
  4. 43 - 51: Supported
  5. 52 - 116: Not supported
  6. 117: Not supported
  7. 118 - 120: Not supported

Opera

  1. 9 - 24: Not supported
  2. 25 - 101: Supported
  3. 102: Supported

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Chrome for Android

  1. 117: Supported

Safari on iOS

  1. 3.2 - 16.6: Not supported
  2. 17.0: Not supported
  3. 17.1: Not supported

Samsung Internet

  1. 4 - 21: Supported
  2. 22: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 73: Supported

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 117: Supported

Firefox for Android

  1. 117: Not supported

QQ Browser

  1. 13.1: Supported

Baidu Browser

  1. 13.18: Supported

KaiOS Browser

  1. 2.5: Supported
  2. 3: Not supported

Firefox 52+ removed access to this API due to privacy concerns.

Resources:
MDN Web Docs - battery status
Simple demo