Keep your vessel s power source maintained with the 12V Battery Charger from Attwood Marine. It delivers fully automatic charging action and features red and green LED indicators to let you know the current status. The ring connectors work with a variety of 12V batteries and offer protection against reverse polarity and short circuits. This water-resistant battery charger also features tabs with holes for screws allowing for installation and mounting on a wall or other surface. It provides a 1.5A maintenance charge so batteries are continually ready for use.