I absolutely hate that you have to take off the fender just to replace the battery. It's like a really annoying prank GM decided to do, but it's not that big of a deal. As for the battery itself, it worked perfect. The battery was ridiculously lighter than the stock battery and the clamp to put it on was seriously easy to put on. There was no instructions sent, but it was pretty darn obvious to me how to use the clamp after a quick glance at the photo. It's a great product and it was shipped to me quite quickly as well.I would suggest this to others. This is an easy and cheap way to shave about 20 lb.