Battery equalizer is an energy transfer equalizer that can compensatethe battery in both directions. When the voltage difference between the batteriesconnected in series exceeds 50 millivolts, the battery equalizer starts to work,and the current will flow from the higher voltage battery to the lower voltage.Thelow battery will eventually balance the battery. It can be connected to the batteryconnected in series for a long time to automatically maintain the battery balancewithout maintenance.This is suitable for lead-acid batteries,- Batterybatteries, Lithium iron phosphate Batteries,nickel-cadmium or nickel-hydrogenbatteries. can work when the voltage is higher than 7V, that is, the batteryequalizer can be used for batteries with a single battery in the range of 7V-18V,and any number of batteries can be connected in parallel or series.The battery equalizer can be installed in multiple parallel connections,and canbe used with 48v 6ov 72v 96V 110V 220V 240V batteries.Each battery equalizer corresponds to 2 batteries.Rail-type buckle installation,can easilyinstall the module in the distribution box. connecting the battery equalizer, confirm the positive andnegative poles of each battery to avoid short circuit and reverse connectionbetween the battery equalizer terminals.Color: blackMaterial: plastic+metalPackage Contents:1 x Battery Equalizer1 set cablesOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.