... // Universal battery analyzer /digital battery tester/ auto battery testerUpgrade version Universal battery tester to test voltage and resistance, Reactivate, charger ... : 2.4V, 3.6V, 4.8V and 6.0V For Li-Ion battery: 3.6V and 7.2Vl Easy Operatel ... charging/over discharging protectionl Reactivate those batteries which are unused for longer timel Fast charging, Slow charging, Discharging all kinds ...