【Multiple Safety Protections】The charger has multiple safety features: fire protection, low voltage protection, overvoltage protection, overcurrent protection, reverse polarity protection, short circuit protection, and overheating protection to ensure your safety. The smart charger contains a fan, which prevents overheating during charging and extends the life of the car charger. 【Intelligent LCD Display】The charger automatically recognizes the current voltage and requires no manual operation. The display can show voltage, current, battery capacity, temperature, etc. You can check the battery's charging status. When charging, the red clip is used to secure the positive (+) terminal of the battery and the black clip is used to secure the negative (-) terminal. Automatically stops charging when finished. 【Widely Used】Suitable for lead-acid batteries, 12V 6-150AH, 24V 6-100AH (AGM, GEL, WET, SLA, VRLA). Diagnoses and repairs battery problems and extends battery life. For cars,