Features:1. The battery equalizer is used to maintain the charge-discharge balance between each of the cells in the series.2. The battery equalizer compensates for the battery in both directions.3. Reverse polarity protection, low voltage disconnection, extending battery life.4. It can be connected in series for a long time in the battery to automatically maintain the balance of the battery state.5. Smart battery voltage balance system can keep battery healthy and prolongs battery lifeSpecification:Condition: Brand newItem Type: Battery EqualizerColor: BlackBattery Standard Voltage: 2 x 12VCompensation Current: 0-5AStandby Current: <3mAProtection Current: Reverse Connection ProtectionUndervoltage Shutdown Value: 10VWorking Temperature: -20~55Size: Approx. 70 x 70 x 27mm / 2.8 x 2.8 x 1.1inWeight: Approx. 220g / 7.8ozPackage List:1 x Battery Equalizer.