Schumacher Electric 4-in-1 Automatic Battery Charger and Maintainer 6V/12V SC1323

RELIABLE POWER: Delivers 15 Amp charge and 3 Amp to maintain car, truck, SUV, RV and marine batteries; compatible with standard, AGM, gel and deep-cycle batteries SMART CHARGING: Microprocessor-controlled automatic amperage rate adjustment and multi-stage charging for added precision, safety and battery life LED INDICATORS: Includes LED lights and simple button controls for ease of use and accuracy  VOLTAGE DETECTION: Automatically detects 6V or 12V batteries