The Weego 66 Jump Starting Power Pack offers a 10 percent increase of true cranking amps compared to the company's previous version, to reach 660 amps. This jump starter offers a lightweight design of 2.5 lbs, and delivers a high powered jump starting charge that works on trucks, tractors, cars, boats and light duty equipment. The company's patented Smarty Clamps easily and firmly contact hard-to-reach terminals found in many commerical vehicle battery compartments. AutoBoost technology ensures dead batteries as low as 1/2V can be safety jumped without a built-in override button. This starter can charge personal electronics with 5V USB and 19V ouputs, powers 12V portable accessories and provides ultra-bright light with a 600 lm dual LED flashlight. This product is backed by an 18-month warranty.