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3.7V 25mAh 400909 rechargeable lithium polymer battery for wireless earphones, speakers, and smart wearables.
| Item | Specification |
|---|---|
| Nominal capacity | 30mAh @0.2C |
| Minimum capacity | 25mAh @0.2C |
| Nominal voltage | 3.7V |
| Max Charging voltage | 4.2 ±0.05 V |
| Discharge ending voltage | 2.75 ±0.05 V |
| Charge Temp | 0~45ºC |
| Discharge Temp | -20~60ºC |
| Cell dimension | 4 * 9 * 9mm |
| Weight | About 5g |
| BMS Electric Features | |
| Overcharge detection | 4.2 ±0.05 V |
| Overdischarge detection | 2.75±0.05 V |
| Max continuous discharge | 25mAh |
| 0V battery charge | Available |
Professional Production: Professional design and strict material selection ensure every product meets certification standards.
Cell Quality: All batteries use Grade A+ cells for long service life and stable capacity.
Safety Management: Built-in high-quality PCB boards protect against overcharge, over-discharge, and short circuits.
