Schumacher 6/2 Amp Dual-Rate Manual/Charger: * Perfect for situations that need a lot of power (including diesel engines) * Two fast charge settings with a very high-output engine start assists batteries in cranking most engines under severe weather conditions * For 6 and 12V batteries * Fan cooled * 300 amp 12V/200 amp 6/24V engine start for emergency starting under severe conditions60 amp rapid charge charges a battery in 1/2 to 1 hour * 30 amp rapid charge for very fast 1 to 2 hour charging * 4 amp slow charge for charging small batteries * "Hold" position on timer switch for continuous charging * Durable construction with tubular handle