I came across this charger and was very excited about it. Now do not do like me and read the title and description and htink you can charge a auto car with this as well. From my understanding after receiving the charger you can charge small batteries like ATV, lawn mower, and things of that nature. I was a little disappointed but I did'nt see how it would charge a car battery even before ordering. After all of that it came in handy for a friends riding mower. It charged that battery right on up and she went on to sell the mower. Before, it sat online a day because no one could test it. It was amazing, that she could use this fraction price charger versus a 70-80 dollar charger. So in the end I am satisfied because it will definitely get the smaller jobs done for me.