1.Adopt ABS flame-retardant shell, fireproof, electric shock, corrosion resistant, solid and durable,Built in circuit protection guards against reverse polarity, sparks, overcharging, over-current, open-circuits, short-circuits and overheating.Note: Do not charge the lithium battery 2.It has 3 modes, Contact Button Design. There is a click sound when touched, and the car mode , motorcycle mode, AGM mode, mode selection of repair mode charging can be switched at any time, solving the button's jam situation 3.This charger is design for 12V and 24V batteries, either it can charge the Truck battery or other automotive batteries like car, golf cart, motorcycle, lawn mower, boat, RV, SUV, ATV and more.Note: Lithium battery disabled 4.LCD screen displays charging status and battery status; Automatically detecting ambient temperature, and the charger can automatically adjust the charging voltage according to the environmental temperature 5.One Key to Repair, Activate Battery,Pulse repair function can help to repair your loss battery and extend battery life. Types of batteries: Most types of lead acid batteries including Calcium, GEL and AGM, Wet,EFB, etc. Input voltage: 100-240V AC, 50-60Hz Rated output: 12V 8A / 24V 4A Minimum start voltage: 2.0V Battery range: 12V: 6Ah-150Ah 24V: 6AH - 100AH Thermal protect: 65'C+/-5'C Efficiency: App. 85%. Compliant standards: CB,CE, IEC60335, EN61000, EN55014 Size: 170*98*58mm(6.7*3.9*2.3in) Switchmode technology: Yes Polarity protection: Yes Output short protection: Yes Non battery link protection: Yes Over voltage protection: Yes Over temperature protection: Yes Condition: Type: Charger Note: 1. The repair function can not activate a dead battery or repair a battery which is seriously; it also can not repair a b