1.100% Brand new2.The battery equalizer will equalize/balance the battery voltage when it detect there are 20mv between two batteris3.Reverse polarity protection, Low Voltage Disconnect to Provide longer Battery Life Time4.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 :24VOptimizing current :0-5AQuiescent current less than 3mALow voltage disconnect :10VInstallation:Please connect the battery equalizer to battery as follows:1.Redcable:BattertBpositive/+pole2.Blackcable:BatteryAnegative/-pole3.White cable:Battery B negative pole or Battery A positive pole(The pole which connected Battery A and Battery Bin seriescolour: blackMaterial: plasticsize: 70x70x27 mmPackage Contents: 1X24V Battery equalizerOnly the above package content, other products are not included.Note: Light 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.