I needed to purchase a replacement battery for my Sony camera. I was surprised how expensive the Sony brand battery was (about $****). I did some searching on the web (Google, Pricegrabber) and found this generic battery on Overstock.com. It is an excellent fit for my camera and I got two replacement batteries for what I would have paid for one Sony brand. The big test will be how long these batteries last, but, I suspect it will be just about the same as the Sony brand.