Smart charger for 12-volt automotive batteries. This compact and easy-to-use device will maintain charge and extend the life of lead-acid, flooded or sealed maintenance-free batteries - including AGM and gel batteries. The unit automatically regulates amperage, which eliminates overcharging and battery damage. It is also protected against short circuits and reverse polarity, making it safe to use. This is a good solution for those looking for a simple and reliable charger for their home.