LED Battery Level Indicator - Press and hold the button, the light will turn on:
- 1 red 3 green — 100%
- 1 red 2 green — 75%
- 1 red 1 green — 50%
- 1 red 0 green — 25%
- LED power indicator informs you to charge the battery in time.
| with Switch and 2A Charger - Press the switch to “-“, the battery will turn on;
- Press the switch to “o”, the battery will turn off.
- The charging current for this socket must not exceed 3 amps.
| with Safety Lock and USB-Port - Several battery pack models have a USB port that can be used to charge cell phones, speakers, and other outdoor devices.
- Security lock can prevent the battery from being stolen.
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