The Schumacher FR01237 Battery Charger and Maintainer is a great option for charging car, SUV, truck, tractor, marine, and RV batteries. The microprocessor automatically adjusts the amperage rate, with multi-stage charging to extend battery life. Includes a simple start/stop interface, LED light indicators that track the charge/start status, and reverse hook-up protection which prevents the charger from operating if the clamps are reversed. Schu Eco Energy meets the highest industry standards. Compatible with standard, AGM, gel, and deep-cycle batteries.