BLACK+DECKER J312B 300-Amp Instant/600-Amp Peak Jump Starter

• 600 amps peak;• 300 amps instant;• 12-volt DC and 2 amp USB charging port to power/recharge personal electronics;• Heavy-duty all-metal, powder-coated clamps;• Visual and audible reverse polarity alarm prevents improper connection ;• Safety power switch and LED charge indicator;• Internal charging cube for use with household extension cord, no external AC charger required;