1. 2.The battery equalizer will equalize/balance the battery voltage when it detect there are 20mv between two batteris 3.Reverse polarity protection, Low Voltage Disconnect to Battery Life Time 4.Can be connected in series or in parallel for a long time in the battery, so as to automatically maintain the balance of the battery state. 5.Suitable for in autos, boats, golf carts, motorcycles, solar, trucks, RV's, electric forklift batteries, and any other battery groups Configuration. Specificattion: Battery nominal voltage :24V Optimizing current :0-5A Quiescent current less than 3mA Low voltage disconnect :10V Installation: Please the battery equalizer to battery as follows: 1.Redcable:BattertBpositive/+pole 2.Blackcable:BatteryAnegative/-pole 3.White cable:Battery B negative pole or Battery A positive pole (The pole which connected Battery A and Battery Bin series colour: black Material: plastic size: 70x70x27 mm Package Contents: 1X24V Battery equalizer Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.