Get professional-grade charging power for your garage with the Stanley BC50BS 15 Amp Smart Battery Charger. Using an integrated microprocessor, it automatically senses your battery's voltage level and applies the correct amount of charge. With a steady 15 Amp charge rate, that means almost any battery will be topped off in short order. But it also means you can leave this charger connected through those cold winter months and then your RV, jet ski or motorcycle will start right up in the Fall. You can use the patented alternator check function to perform an important diagnostic check on your vehicle, or hit Engine Start for a rapid, 50 Amp charge that will help start most vehicles in short order. Finally, there's a battery reconditioning mode designed to extend battery life and improve overall performance. The Stanley BC50BS 15 Amp battery Charger packs all that into a slim, lightweight case that fits right on the corner of your work bench. New.