The Clore AutomotiveCharge It! Battery Charger and Maintainer, No. 4502, features fully automatic 6V and 12V operation and provides maintenance on cars, trucks, motorcycles and other vehicles. The unit can remain connected for any amount of time, including overnight charging and extended charging of seasonal-use vehicles. It uses a 2.5 amp, 12V charging rate that deploys a multi-stage charging routine for charging and maintenance of all size batteries. The charger utilizes a LED status display for monitoring and reverse polarity protection, outputting power only when a proper battery connection has been made to reduce the chance of vehicle damage. It meets all current efficiency requirements.