Schumacher SEM-1562A Automatic Microprocessor Charger/Maintainer, 1.5 AmpSEM 1562A 1. 5 Amp Speed Charge Maintainer is a unique AC powered automatic charging accessory for use with everything from smaller batteries designed for motorcycles, tractors and mowers, to standard car truck batteries and marine deep cycle batteries. Designed around an internal microprocessor which constantly collects information from the battery that the unit is attached to, the SEM 1562A effortlessly and quickly ensures that your 6 and 12 volt