Multiple Safety ProtectionCharger has multiple safety functions: fire-resistant flower, low voltage protection, overvoltage protection, overcurrent protection, reverse connection protection, short circuit protection, overload protection overheating, guarantee your safety. Don't worry about overcharging, short circuit and reverse polarity. Compact, Intelligent & Durable It can charge all types of 12V lead-acid batteries, including including maintenance free flooded or sealed batteries (AGM and gel cell). It is the best smart charger for automobile, motorcycle, marine, RV, Powersport, lawn and garden, etc. Fully automaticNo need for any manual operation, just plug it in and leave it to charge and maintain your batteries automatically for a long time. The microprocessor controlled program will monitor the charging progress and automatically stop when the battery is fully charged. Intelligent LCD Display The display can show the voltage, current, capacity of the battery. battery. It is possible to know the state of charge of the battery. When charging, the red clip is used to secure the black positive (+) battery with the clip to secure the negative (-) battery. Intelligent charger contains a fan, it prevents overheating during charging and extends the life of the car charger. Repair FunctionHigh frequency and low frequency pulse technology produces good charging effects. repair and activation. Suitable for low voltage batteries, long-unused batteries, damaged batteries and vulcanized batteries. But, it cannot activate a dead battery or repair a battery that is badly damaged, nor can it repair a faulty car charger battery and recover it to 100% new.