The Kumiho eGo C Twist vv 1300 mAh battery has atomizer, short circuit and low voltage protection.
The battery will lock when you press the button for 10 seconds and stay locked until you press it again.
The battery will shut down if a short circuit happens and will not work until the short circuit ends.
The battery will shut down when the voltage is lower then 3.3 volts.
Kumiho eGo-C Twist battery button has a 5-click On/Off lock. Just press the button 5 clicks within 2 seconds to turn the battery on.
This battery allows you to adjust the voltage output from 3.3v to 4.8v by turning the knob at the bottom.
650mAh - Length 93mm; Diameter 14mm
1300mAh - Length 113mm; Diameter 16mm