The LB 900 mAh Battery is a long life 3.7 volt 900 mAh rechargeable lithium manual battery with 5 clicks On and 5 clicks Off switch function. 

The LB 900 mAh Battery also features a auto cut out feature to protect the atomizer should it be left on continuously for longer than 10 seconds. Another great feature to the Evod Twist Battery is its 4 stages of light. Green is fully charged, blue is running low on charge and red is absolutely dead and finally a rainbow of lights when you plug in the Evod 900 mAh Battery for charging. 

The LB 900 mAh Battery puts out a constant 3.7 volts no matter how charged the battery is.