... li-ion battery, NI-MH battery, Ni Cd battery, power, adapter, power bank. 2. charging and discharging functons About RFNT4 Universal ... the voltage (V), current (A), capacity (mAh), resistance (Ω) ,power output(W) information. It can charge, dis-charge and reacted the ... , internal resistance testing, and voltage testing, capacity testing.3. LCD screen display function information.4. Enter, Down, Right, ...