BLACK+DECKER BC6BDW Waterproof Battery Charger/Maintainer (6 Amps)

0A-6A fully automatic battery charger & maintainer; Waterproof--sealed from dust, oil & moisture to prevent corrosion ; High-frequency technology--user simply hooks it up, plugs it in & turns it on; Reverse-polarity protection; AC low-voltage compensation ensures maximum performance when used with extension cords; Connects to battery via battery clamp or 12V DC accessory plug;