This is much better than the storage units I have used in the past. The light feature of both a high-intensity light and the blinking SOS makes this great for boats, Jet Ski's, snowmobiles or anyplace getting stuck could become a serious concern. I can use the jumper cables to jump-start a car or boat. I can run my tablet and phone for extended periods of time without having to worry about finding a place to re-charge or being stuck waiting for it to charge before I can leave. The two USB ports give me multiple output options. I have not found a use for the DC output yet, but I will. It is also great to run a fuel pump instead of pouring the fuel by hand when filling small boats and Jet Ski'sAfter using this for a while, I decided to buy additional units for my buddies so we always have at least one handy.