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Introducing the Black & Decker Automatic Charger/Battery Maintainer - 12VDC, designed to meet your power needs for various applications. With an amperage rating of 25A, this battery maintainer is ideal for charging and maintaining 12-volt batteries in boats, cars, and RVs, ensuring you always have a reliable source of power on hand. The fully automatic high-frequency charging technology reconditions your battery for optimal performance, while the patented alternator check and voltage check keep your vehicle's charging system running smoothly. The reverse polarity protection keeps you safe during installation, and the compact design takes up minimal space in your vehicle or storage area. Use this versatile charger to stay connected and powered up wherever you go!