Feature:1. Circuit Protection: Has built in protection against short circuits and bad connections, and will automatically restart after a power failure.2. Charging Characteristics: With 1A 2A 3A 4.5A charging characteristics, it can be automatically selected according to battery capacity or charging level.3. Winter Mode: Winter mode for standard battery 12V or AGM 12V, can be used at 5 or lower ambient temperature.4. Battery Failure Display: The battery voltage resolution is 0.1V, indicating battery polarity reversal, battery failure or connection problem.5. Reliable Operation: Built in anti spark and overheating device, and has IP65 protection level, the operation is safer and more reliable.Specification:Item Type: Car Battery ChargerProduct Model: SM3-WP-5Battery Type: Standard battery, AGM, GELProtection Level: IP65 (dustproof and waterproof)Double Insulation: YesBattery Capacity: Minimum 1.2Ah, maximum 120Ah.Package List:1 x Charger1 x O Ring Wire1 x Crocodilian Clip Wire1 x User ManualNote:This user manual contains operating instructions and important safety procedures. Before using this charger, please read this manual carefully and keep it in a safe place for future reference. Use the charger in a safe and ventilated environment, away from corrosive or explosive chemicals, flammable liquids or gases. Keep the charger and battery away from ignition sources, because rechargeable batteries can produce explosive gas. It is recommended to wear safety goggles. Check the general condition of the charger to ensure that the cables, input output leads, plugs and crocodilian clips are not damaged in any way. Never use a damaged charger or try to repair a damaged charger. The charger can only be used by responsible and capable adults.