Schumacher SC1281 6/12V Fully Automatic Battery Charger, Engine Starter, Boost Maintainer and Auto Desulfator with Advanced Diagnostic Testing- 100 Amp/30 Amp, 6V/12V

POWERFUL PERFORMANCE: The Schumacher SC1281 delivers 100A engine start, a 30A boost, and 6A2A charge/maintain rates; Strong enough for cars, SUVs, and trucks
30A BOOST MODE: The boost modes quickly bring deeply discharged batteries back to life
ADVANCED DIAGNOSTICS: A built-in battery and alternator tester determines charge level and helps diagnose electrical problems