Add a useful option to your tool library with the Stanley FatMax BC8S Battery Charger. It's ideal for mechanics, hobbyists and those who frequently repair vehicles. This car battery charger automatically powers up and maintains levels. It keeps your cell at optimal capacity and is sealed and conformal coated to protect against moisture, corrosion, dust and oil. Status indicators help you monitor progress as you work, and reverse polarity lights warn against an improper connection.