... ion battery, NI-MH battery, Ni Cd battery, power, adapter, power bank. 2. charging and discharging functons About RFNT4 ... power, adapter2. Supply for charging, discharging, battery testing, power/adapter testing, internal resistance testing, and voltage testing, capacity testing.3 ... charge: When the current reduced to terminate current, Or e capacity reaches 100%Charge current3000mA Max, set by CHARGE ...