-Compact, lightweight and fully portable, this power source will charge everything from vehicle batteries to USB to 12-volt devices, and includes built-in Battery Diagnostics with LCD panel display - It will stay charged for up to 2 years before a recharge is required, has a lifetime of up to 5000 charging cycles (regular battery is 500) and will operate in the most extreme temperature - Built-in heavy-duty 8 gauge booster cables w/ reverse polarity indicator. 8.5" L x 5" W x 8" H