ProMariner ProSport 1.5 Amp Portable Battery Maintainer
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Safe for long- and short-term battery storage
This battery maintainer provides a precise maintenance mode and is safe for long and short term battery storage. This fully automatic, precision-regulated maintainer can be left on indefinitely while keeping your battery fully charged and extending its life. Features built-in ignition, polarity, over temp, and short circuit protection. One-year warranty.