Sears offers the DieHard Gold 250A Wheeled Battery Charger & Engine Starter, model no. 71340, for $139.99. Coupon code "SEARS5OFF50" cuts it to $134.99. With free shipping, that's $35 off and the lowest total price we could find. It features a dial with 250-amp engine start current, 50-amp rapid charge and 15-amp fast charge, 12-foot total reach, and 8-gauge output cables.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.