Schumacher 4/2 Amp Charger/Maintainer: * Efficient SpeedCharge technology and the convenience of multiple battery connectors * Charges small motorcycle, ATV, snowmobile and lawn tractor batteries * Maintains small and large, stored or antique/classic-car batteries * For 6 and 12V batteries * 2 amp trickle charge rate for 12V batteries * 4 amp trickle charge rate for 6V batteries * Reverse-hookup protection * Versatile Quick-Disconnect Harness with 3 connectors * 50 amp clamps for top and side post batteries * 12V accessory plug for in-car charging or charging portable power jump starters, it charges them faster than the provided charge * Ring connectors for permanent connection * Great for hard-to-reach motorcycle batteries * Molded plastic case