Automatic 12V 1.5 Amp Maintainer/Charger Features automatically powers on when needed float mode when battery is fully charged LED charging light indicates charging status reverse polarity and short circuit protection specifically designed for maintaining batteries designed to be mounted in proximity of battery durable plastic case prevents damage to charger from oil, water, gasoline and other automobile fluids safe for all 12V lead acid battery types - Conventional, AGM and Gel Cell