It does what it promises, recharges my car battery :) Very easy to use, it seems to remember the amperage setting that was previously used, and changing the amps is very easy too, just push the one button on it and it cycles through the available settings; 6A, 10A, 13A and 16A. Comes with a handy bag for transportation, to keep the cables neatly organized and the unit clean from any debris. 5 out of 5, would buy again :)