6-in-1 Device: Battery charger, battery maintainer, engine starter, desulfator, battery tester, and alternator tester | Powerful Performance - 85 cranking amps engine start with a 30 amp boost, 6 amp charge, and 2 amp maintain modes | Advanced Diagnostics - built-in battery and alternator tester determines charge level and helps diagnose electrical problems | Fully Automatic - Automatically detects connected 6 volt and 12 volt batteries and when the battery is fully charged, the unit stops charging and shifts to maintain mode | Boost Battery Health - Featuring multi-stage charging and float mode monitoring for optimum battery health and extended battery life | Reverse Hook-Up Protection - With built-in advanced reverse hook-up protection, the charger protects against damage if the clamps are not properly connected | Wide Compatibility - 6 volt and 12 volt standard, AGM, and deep-cycle batteries | In the Box - Schumacher Electric SC1307 6-in-1 85 Cranking Amp 6 Volt and 12 Volt Fully Automatic Battery Charger and Engine Starter and user manual

FOR SCHUMACHER CHARGERS/MAINTAINERS: The WM-12 Ring Connection Cable allows you to quickly attach Schumacher brand battery chargers and maintainers; Compatible with units 5A and under | QUICK-CONNECT HARNESS: Schumacher’s quick-connect harness allows you to hook up Schumacher battery charger and/or maintainer in seconds without fussing with clamps or ring leads | COLOR-CODED CABLES: The WM-12’s cables are 18 inches in length to add accessibility to hard-to-reach batteries on motorcycles, power sports vehicles, and lawn tractors; Color-coded for simple, error-free installation | SCHUMACHER QUALITY: Trust Schumacher for reliable and well-made power conversion tools and battery accessories; Schumacher has been manufacturing quality automotive products since 1947 | EASY TO INSTALL: Simply connect the WM-12’s ring leads to the battery terminal and then connect your Schumacher battery charger or maintainer with the quick-connect harness