BLACK+DECKER 600/300 Amp Jump Starter Box w/ USB (J312B)

BLACK+DECKER 600/300 Amp Jump Starter Box w/ USB (J312B) Featuring integrated battery clamps with reverse polarity alarm 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 2 Amp USB port. With a built-in AC charger, you can recharge using a common household extension cord the push-button battery status LEDs tell you the unit's charge level and when charging, exactly how much longer it needs to reach full charge.