1、BATTERY PROTECTION: The battery equalizer has smart voltage compensation system that keeps the battery idle and automatically turns off when the voltage is low. 2、AUTOMATIC BALANCE: The battery equalizer can be connected in series with the battery for a long time to maintain the charge discharge balance between series batteries. 3、MULTIPLE PROTECTION: Can maintain balance in both charging and discharging direction, with reverse polarity protection, low voltage insulation, reverse connection protection. 4、APPLICABLE BATTERY: This battery balancer is suitable for lithium batteries, nickel hydrogen batteries, lithium iron phosphate batteries, etc., effectively balancing voltage. 5、WIDE APPLICATIONS: This battery voltage equalizer can be used for battery configurations such as cars, ships, motorcycles, solar panels, etc., compact and practical.