... . test polymer li-ion battery, NI-MH battery, Ni Cd battery, power, adapter, power bank. 2. charging and discharging ... . Support polymer li-ion battery, NI-MH battery, Ni Cd battery, power, adapter2. Supply for charging, discharging, battery testing ... internal resistance testing, and voltage testing, capacity testing.3. LCD screen display function information.4. Enter, Down, Right, Adjust function keys ...