Suggested Retail:$50. BLACK+DECKER 300 Amp Portable Jump Starter. The BLACK + DECKER J312B 600 Peak Amp jump starter is a lightweight, portable, go-anywhere solution for most cars and light-duty trucks. Featuring integrated battery clamps with reverse polarity protection and a special safety switch, this compact unit takes up very little space while offering the ability to restart your car or power up your portable electronics through the included 12 Volt outlet and 3.1 Amp USB port. With a built-in AC charger, you can recharge using a common household extension cord, and the push-button battery status LEDs tell you exactly how much longer it needs to reach full charge. With the BLACK + DECKER J312B 600 Peak Amp jump starter, you get the perfect first line of defense against roadside emergencies and dead batteries.. 7 DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. PAID DELIVERY AND 7 DAY ALTERNATE PICK-UP ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.