The Fiio E3 headphone battery is a Li Polymer type with a voltage of 3.7 V and a capacity of 190 mAh. It is compatible with the Fiio E3, Fiio E5, and Fiio E6 models, as well as PL402030 1S1P.
- Type: Li Polymer
- Voltage: 3.7 V
- Capacity: 190 mAh
- Compatibility: Fiio E3, Fiio E5, Fiio E6, PL402030 1S1P