I had purchased a snap on led work light in 2015 powered by a 7.4v lithium ion battery. Since battery wouldn't charge anymore, I removed it and found enough information to start a battery search on internet. I came across many so called equivalent batterys, but size and amp hours were not even close. Until I found the tenergy website. There style of listing technical specs made it very clear that a certain model battery would not only fit but have a few amp hours more than original. There website was clear and precise and made it easy to pick a replacement, unlike 4 other battery company's selling batterys on the internet. As a mechanic, I use this great light all the time, but snap on doesn't even sell parts for it anymore which means buying a new one for 400.00 bucs or finding a new battery for 80.00. tenergy came threw and in 4 days got it installed and charged up and works great again. Which