As one of its daily deals, Sears offers the DieHard Portable Power 750 Battery Booster with 12-volt Outlet and Light, model no. 71486, for an in-cart price of $39.99. Opt for free in-store pickup to dodge the $16.16 shipping charge. With pickup, that's $30 under the lowest total price we could find for a shipped unit. Sales tax is added where applicable. This portable power source allows you to jump start a car or supply power to a wide range of electronic devices. It features 750 peak amps, built-in light, 12-volt DC power outlet, and 18" booster cables with spark-resistant clamps. Deal ends today.