1、This is a fully automatic charger with 3 charging stages, constant current charging, constant voltage charging, and trickle charging. It is very convenient to restore and activate with one key. 2、Multiple protection functions make this charger safer. Overvoltage, overheating, overcharging, short circuit, reverse connection, overcurrent, and low current protection. 3、In summer and winter modes, it can detect the temperature and automatically switch to the appropriate voltage. Also equipped with a silent cooling fan and aluminum radiator, which can extend the life of the charger. 4、Microprocessor (CPU) control can save battery and provide battery charging service quickly! Automatic charging prevents the battery from overcharging, so you can connect the charger to the battery indefinitely. 5、The LCD digital display displays real‑time voltage, current, temperature, and battery power for easy reading. Pure copper transformer also have the advantages of stable output, high energy conversion rate, energy saving, and large capacity. 6、The exterior is made of ABS flame‑retardant material, insulated, flame‑retardant and high temperature resistant. Frost‑proof soft copper core wire, with a full‑covered clip, dirt‑resistant and practical. 7、Suitable for most battery types, such as lead-acid batteries, including calcium, GEL and AGM, wet type, EFB, etc. It can also help recover drained and sulfated batteries.