The Schumacher SC1281 is a fully automatic battery charger and engine starter designed for use with SUVs, trucks and large batteries. With 100 Amp engine start and 30 Amp boost mode, this unit delivers results when you need it most. Microprocessor controlled to automatically adjust the amperage rate and diagnose problems. The unit features multi-stage charging for added precision, safety and battery life. Includes auto voltage detection and an easy to use stop/start button. Reverse hook-up protection with an LED light indicator prevents the charger from operating if clamps are reversed. Schu Eco Energy meets the highest industry standards. DOE compliant and compatible with standard, AGM, gel and deep-cycle batteries.