1、Has protection of over voltage, over temperature, overcharge, short circuit, reverse connection, overcurrent, lowcurrent. 2、It is a fully automatic charger with 3 charging stages, constant current charge, constant voltage charge, trickle charge. 3、With summer and winter mode, and able to detect the temperature, and it will switch to the appropriate voltage automatically. 4、Equipped with silent cooling fans and aluminum radiator, which can extend the service life of this charger. 5、Microprocessor (CPU) control to save and fast battery charging service, one button to restore and activate, very convenient. 6、LCD digital display voltage, current, temperature, battery capacity in real time, convenient to read. The exterior is made of ABS flame retardant material, insulation, flame retardant, high temperature. 7、Freeze-resistant soft copper core line, with full coverage alligator clip, soild and practical. Pure copper transformer, stable output, high energy conversion rate, energy saving, large capacity. 8、Automatic charging protects your battery from being overcharged, so you can leave the charger connected to the battery indefinitely. 9、Most types of batteries including Calcium, GEL and AGM, Wet, EFB, etc., can also help restore drained and sulphated batteries.