I received my Haisito smart charger fairly quickly, and the first thing I did was to charge my Lead-Acid battery bank of 400 Amp hours which I would need to break down to individual batteries because of the size of bank and to get individual battery reading, not a problem. After plugging in and setting mode with charging amps. and type of battery, easy as that. This unit constantly flashes vital information such as volts, charging amps, battery /temp. and state of charge and AH with an active baSee full review