Took my MPOW H12 ANC headphones to an electronics shop in Thailand to replace the battery. Access fairly easy (under LEFT cup). Battery is marked:

-YT 802035 500mAh

+3.7V. 1.85Wh

20190829

Dimensions are: 1.9-2.0cm by 3.5cm by 0.7cm.

Do you think the same battery is used in MPOW H12? My battery no longer holds a charge and even though inexpensive, the headphones are no longer sold on Amazon.