Check the listing for details. 12V Voltage Balancer Battery Equalizer HC02 Battery Regulators Charge Controller. Color: Black, Condition: New. Listed at 68.79 USD. H-currency Welcome Product Description Battery balancer 4s solar battery equalizer balancer with digital tube LED display Features:* How it works: The battery equalizer is a power transfer mode equalization. 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 lower voltage, and the maximum compensation current is 10A.* When the voltage difference between the two batteries is lower than 10mV, the equalizer starts to work* The equalizer can be used during charging and discharging, and can play a role in balancing the battery voltage.* Can be used for lead-acid batteries, lithium iron phosphate batteries, nickel-cadmium or nickel-metal hydride batteries. Specification:Name: Battery BalancerMaterial: ABSDisplay: LED displayWorking voltage: 4*0.4/3.6/12VCompensation current: 0-10AStandby current: