Version 2. Suitable for charging 10340 / 10440 / 14500 / 16340 / 18500 / 18650 / 26650 / 26500 AA / AAA batteries; With 4 individual charging slot; Working mode: charge discharge discharge refersh charge test and quick test; Push display can show charging current voltage battery volume and charging / discharging time; Default charging current: 500mA; Push current button can adjust current; Slot button can adjust working mode of each channel; Current for choice: 200mA 300mA 500mA 700mA 1000mA; Battery only in 1-CH and 4-CH: 200mA 300mA 500mA 700mA 1000mA 1500mA 2000mA.