Battery Tender Waterproof 800

Battery Tender® Waterproof 800 12V Battery charger
Compact 800mA 12V Battery charger.  The interior is completely encapsulated, protected from shock, vibration, and moisture by an electrically insulating thermally conductive, flame retardant, synthetic epoxy resin compound. IC Chip constantly monitors, charges and then maintains your battery, even if totally submerged under water.