Today only, Sears offers the DieHard Platinum Microprocessor-Controlled Wheeled Battery Charger, model no. 71234, for $139.99. Coupon code "MAYDEALS" cuts it to $124.99. With free shipping, that's $105 off list and the lowest total price we could find. Sales tax is added where applicable. It features a charging system tester, two GFCI outlets, three charging speeds, battery clamps, and more. It's intended for charging or jumping cars or large equipment. Deal ends May 12.