If you have a hum Smart Battery Powered Toothbrush, 2 AAA batteries are included. You can replace the batteries by firmly holding the bottom of the handle while rotating the top counter-clockwise. Insert 2 new AAA batteries as indicated inside the brush handle and firmly rotate clockwise back into position to close.
You can check on the status of the battery level using the hum app:
- Open the hum App
- Make sure your toothbrush is paired with your device
- Open the toothbrush settings
- Check out the battery level section