Advken 4000 mAh batteries have been tested extensively and can handle some serious current for extended periods of time.
Advken 21700 Battery Specification:
- Size: 21 x 21 x 70mm
- Model: 21700
- Capacity: 4000mAh
- Voltage: 3.7V
- Max discharge current: 20A
- Color: Black&Blue
- 1 x 21700 Battery
The ADVKEN 4000 mAh battery is a 21700 battery used for
powering vaping mods and other electrical devices.