Our most popular wheel charger. Designed for D-I-Y'ers or professional mechanics. Manual operation puts user in control. High-output engine start assists batteries in cranking most engines under severe conditions. For 6 and 12 volt batteries. Fan cooled. • 200 amp 12 volt/100 amp 6 volt engine start – for emergency starting. • 40 amp rapid charge – charges in 1/2 to 1 hour.• 10 amp fast charge – for everyday charging needs. Charges in 3 to 5 hours. • 1 Amp, 12 Volt Slow/Trickle Charge Rate – for small batteries also maintains batteries. • 2 rotary switches – for ease-of-use and accuracy. • ""Hold"" position on timer switch – for continuous charging. • UL Rating: 10 amp and 40 amp continuous, 200 amp start. • Discharge Rating: 12/50 amp. SE-4020 - 200 amp 40 amp 10 amp SE-4020$220.53 Copyright © 2008 Schumacher Electric Corp. All Rights Reserved.