For an all-around charger and maintainer that can take a beating, look no further than Schumachers SC1320. This microprocessor controlled charger/maintainer automatically adjusts the amperage rate while charging and maintaining a battery. Pair that with multi-stage charging and float-mode monitoring and users have a quality product that keeps their safety in mind while adding precision to the battery charging process and extending the life of your battery. The SC1320 automatically detects 6- and 12-volt batteries and is equipped with reverse hook-up protection so users will never have to worry about damage to a battery if the clamps are reversed. Sealed in a heavy-duty case, this charger/maintainer can handle anything thrown at it, even rough rides in the back of a truck.