For automotive tools you can trust, look no further than the Schumacher Pro line of battery chargers and engine starters. The Schumacher Pro Fully Automatic 4-in-1 12-Volt Battery Charger and 80-Amp Engine Starter is designed for charging and starting car, SUV, or small truck batteries. It delivers an 80-Amp engine start, 20-Amp boost mode, and a 6-Amp to 2-Amp charge/maintain rate. Fully automatic and microprocessor controlled, the Schumacher Pro SPR1629 charger and engine starter automatically adjusts the Amperage rate during charging and maintaining. The unit also features multi-stage charging and float-mode monitoring for optimum battery health and extended battery life. Other features of the Schumacher Pro SPR1629 include bad battery detection, reverse hook-up protection, included metal clAmps with a 75 in. cable, easy-to-use controls, and LED indicators.