1The battery equalizer is used to maintain the charge-discharge balance between each of the cells in the series. 2The battery equalizer compensates for the battery in both directions. 3Reverse polarity protection, low voltage disconnection, extending battery life. 4It can be connected in series for a long time in the battery to automatically maintain the balance of the battery state. 5Smart battery voltage balance system can keep battery healthy and prolongs battery lifeFeatures: 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 life Specification: Condition: 100% Brand new Item Type: Battery Equalizer Color: Black Battery RatedVoltage: 48V Compensation Current: 0-10A Quiescent Current: 5mA (12V) 1.2mA (2.4V) Protection: Reverse polarity protection Undervoltage Lockout: 1.8V Size: Approx. 124 x 62 x 27mm / 4.9 x 2.4 x 1.1in Weight: Approx.400g / 14.1oz Package List: 1 x Battery Equalizer Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.