Xiaomi Mi True Wireless Earphones teardown

I decide to Xiaomi Mi True Wireless Earphones teardown due bad quality of sound.

[@user-bp2vq6rg4h]

Where can I find the batteries in the headphones?

[@alexwhite1387]

Аккум в самих ушах Lir 1254 / zj1254c

[@JanKowalski-vm4fv]

What if box detect earphones but they do not charging?

[@alexwhite1387]

maybe acc in earphones (not box/case) model for replace zj1254c / lir 1254 (one pcs for one ear) good luck!