Arylic M500 TWS headphones

Hello. Please tell me the size or model of batteries used in the headphones. Mine began to discharge quickly. New ones need to be ordered. Thank you.

I need the dimensions of the battery in the earphone in my ear.

@frolovandrej76 Hi, your pictures is very good searchable:
I think it is the same type of yours:

“3.7V 30mah 401012 Lithium Polymer Rechargeable Battery For Bluetooth Headset”

Thank you very much. They helped out a lot.

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