... battery (as Ni-MH battery, Ni-CD battery, Lithium-ion battery and polymer batter, etc. --battery tester/load tester ... four wire method, decrease contact error, increase measure precision.4. Each channel is independent With high efficient cooling system, ... to constant voltage without pinnacle, protect battery.Input powerAC 220 V ± 10% / 50 HzCurrent Output Range± 10AVoltage measurement RangeCharge: ...