Mazava Active Battery Balancer up to 48vThe HC02 battery equalizer is an energy transfer equalizer, which can compensate the batteries in both directions. When the voltage difference between the batteries connected in series exceeds 10 mV, the battery equalizer starts to work, and the current will flow from the battery with the higher voltage to the battery with the higher voltage. Low battery, and finally make the battery balance. It can be connected to the battery connected in series for