I've been using it for a couple months. I ran it dead a couple times using it for various tasks and then recharged it. It seems to be holding its charge. The price is right. The screen isn't perfect but it is readable. A good value for the money. I own many different of these. I've used it on multiple cars, a tractor, ATV, and my 6.1 Hemi. No issue on any of them.
I'll update if I have any problems with it. The case is sufficient and nicer than many I own. I keep this one in my daily driver now. You just hook it up, push the button, and start the car. Simple intuitive use.