Roll it where you need it. The CAT Professional Rolling 40A Battery Charger, 3A Battery Maintainer and 200A Engine Start is the high efficiency automatic solution for cars, trucks, SUVs, marine vehicles and RVs. The battery charger provides a powerful 200A engine start, 40A of charging and 3A maintainer. Compatible with standard 12V AGM batteries, the built-in circuit protection guards against overcharging, reverse polarity or short circuit. The alternator check on the battery maintainer tests the vehicle's alternator to indicate if it is operating properly. Electric pulse technology can help reverse sulfate build-up on battery plates to improve charge capacity and extend battery life.

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