Today only, Sears has this DieHard Platinum Microprocessor-Controlled Wheeled Battery Charger for $229.99. Add it to your cart and the price drops to $139.99. It features a charging system tester, two GFCI outlets, three charging speeds, and battery clamps. It's intended for charging or jumping cars or large equipment. Amazon
has the same item for $303.66. Shipping is free.