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The Boltpower power maintainer is a portable automatic battery charger and maintainer for both 6V and 12V lead-acid battery. Designed for charging a Motorcycle, ATV, Snowmobile, Personal Watercraft, Lawn Mower and much more. It also can be used as a battery maintainer to keep a Car, Boat, Truck, RV, and deep-cycle batteries fully charged. And it monitors battery activity for safe and efficient charging without any overcharge and complete with a built-in battery desulfator to rejuvenate underperforming batteries.