The KwikStart 650 Re-chargeable 12 volt DC power supply is equipped with a UL listed 12 volt DC battery which is ideal for jump-starting cars, boats, RV’s and Tractors. Bright LED’s will quickly show the operator the charge level in the battery. The operator can also use up to 50 hours of portable DC power for cell phones, tools, lights & more. This unit has 44% more cranking power than KwikStart 425.