Battery Equalizer Application HA02 battery equalizer is suitable for lead-acid batteries(VRLA) lithium iron phosphate batteries(), -ca dmium secondary batteries(Ni/CD), and -metal hydride secondary batteries(Ni/) It starts work when the voltage higher than 2.4v, it means that this equalizer can be used in a single cell battery range from 2.4V to 12V One equalizer can batteries a time, if battery less than the 4,the extra cable can be vacant (posi tive and negative terminal should be avoided), does not affect the equilibrium effects. The equalizer is not affecte d with battery connection way, no matter in Series or in parallel, both can work. Model Number: HA02 Color: Black : plastic TECHNICAL DATABattery nominal voltage 4x(2.4V/3.6V/6V/9V/12V) Optimizing current 0-10A Quiescent current 5mA(12V)1.2mA(2.4V) Dimensions 62x124x27 mm Protection Reverse polarity protection Under voltage lock out 1.8V Package Contents: 1 x Battery Equalizer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.