I work in the RV industry and I can't tell you how many times this jumpbox has saved my butt while trying to unhitch a trailer with a dead battery or diagnosing 12V problems. Very easy to operate, there is only 1 dial for on/off and 1 button to check status. The battery life is decent, I can get several 3-5 minute uses out of it before I start seeing a drop in voltage. That being said, the charger for this thing is slow. It takes several hours to reach a complete charge after discharging to 30/40. Lastly, this thing is heavy. I am young and in good health and don't mind lugging this thing around but if you are elderly, or have joint issues, absolutely no disrespect at all, but you need to find a lighter option.
Rating: [5 of 5 Stars!]