Schumacher 4/2A Powersport Extreme Charger/Maintainer: * Unique automatic battery charger maintains both 6 and 12V batteries, keeping them at full charge using float-mode monitoring * Great for maintaining small and large batteries kept in storage, motorcycles, classic cars, RVs and boats * 2 amp charger and maintainer * LEDs indicate charging, charged and power * Automatically switches from Full Charge to Float-Mode Monitoring * Quick-Disconnect Harness: snap either connector into place in seconds * Use the 50 amp clamps, 12V accessory plug or permanently attach the ring connectors, great for hard-to-reach motorcycle batteries * Reverse-hookup protection * Auto Voltage Detection: the charger automatically determines whether the connected battery is a 6V battery or a 12V battery