Car Battery Charger, 12V/24V, 8A, Touch Screen, Black/Yellow Battery Charger, More Safety Functions —— The charger adopts more safety functions: fire protection, overvoltage protection, reverse polarity protection (wrong connection of positive and negative poles), short circuit protection and overheating protection. In addition, a fan is used on the side of the charger to prevent overheating during charging. Intended Use of Battery Charger - Do not charge lithium batteries. Optional rated power: 12V/8A, 24V/4A. Minimum starting voltage: 2.0V. Battery life: 6 - 150Ah. (for AGM, GEL, MF, SLA, VRLA) Intelligent LCD Digital Display: The charger automatically detects the current voltage, no need for manual adjustment. The screen can display voltage, current, battery capacity, temperature, charging status, etc. When the battery is connected to a power source, clamp the positive (+) terminal of the battery with the red clip and the negative (-) terminal of the battery with the black clip.