Schumacher’s 4/30/60/300A 6/12V Manual Wheel Charger with Engine Start is a heavy-duty model for large fleet operations and industrial use, ideal for repair shops needing extra power and the ability to test batteries and alternators. Features two rapid charge settings, with a very high-output engine start to assist batteries in cranking most engines in severe weather conditions. Designed for 6 and 12 Volt batteries, this charger is fan-cooled. Features 300 Amp 12 Volt/200 Amp 6 Volt engine start for emergency starting; 60 Amp rapid charge for charging a battery in 1/2 hour to 1 hour; 30 Amp rapid charge for very fast charging, charges in 1 to 2 hours; and 4 Amp slow charge for charging and maintaining small batteries. Includes a “Hold” position – for continuous charging, as well as an on-board battery load tester: tests 50 Amps on a 6 Volt system or 100 Amps on a 12 Volt system. Durable construction with tubular handle. CUL Listed: Model SF-8050.