Check Battery Level
Built-in 12 smart LED indicators display remaining power.
1%- 17%:no lights
18%-33% : 2 green lights on
34%-50% : 4 green lights on
51%-67% : 6 green lights on
68%-83% : 8 green lights on
84%-99% : 10 green lights on
Fully charged, all green lights on, red light off.