1.Built-in battery in the control box
2.3.Rotary: 0~40000 RPM with LCD display
4.Full recharge time:3 h, Continuous use time:6 h
5.Warning: Continuing 3 times is not right operation, need to pause or
return- on the machine.
6.Battery Indicator: 30% 70% 100%. Charging in red, full power in
green, machine off and battery totally no power light off.
7.Battery Capacity:7.4V/ 2500mAH
8.Forward/Reverse: Touch 0.5s~1s to select