The Schumacher SP1297 12V Fully Automatic Battery Charger and 3A Maintainer is great for motorcycle, car and marine batteries. It’s energy efficient and fully automatic. The clamp and ring terminal adapters are easy to connect, and the convenient hook attachment lets you hang the unit outside of the work area. The microprocessor automatically adjusts the amperage rate with multi-stage charging and float mode monitoring for optimum charging and maintaining to extend battery life. This battery charger features reverse hook-up protection which prevents the charger from operating if the clamps are reversed. The scrolling digital messaging provides step-by-step instructions to properly charge your battery. This unit includes a hook attachment which allows it to hang outside of the work area for safety and convenience.