ProMariner Pro Sport 1.5 Battery Charge Maintainer

Fully automatic charge maintainer with precise voltage regulation. Doesn?t drain your battery if the AC is off. LED on indicator. Reverse polarity, over temperature, and short circuit protected. Precisely regulated and won't overcharge or damage batteries. Charges a 250-amp/hour battery. Will work on lead acid, gel cell, and AGM (absorbent glass matt) batteries. Manufacturer's 2-year warranty.