I've been using the Nikon EN-EL3 with my Nikon camera for a few months and I'm very satisfied with its performance. The battery lasts for over 1000 flash pictures and it's a must-buy for people who hate recharging their camera batteries frequently. However, the battery has one major flaw. It dies really fast when there is very little charge left. Initially, I purchased a second battery along with my first one as I wanted to have a backup ready for busy events. But I haven't used it much as the first battery does its job very efficiently. The nice thing about this battery is that it doesn't take much time to recharge, too. I wish my cell phone battery was as long-lasting as my camera battery! If you're looking to buy a camera battery, check out the Nikon EN-EL3 batteries as they are really of good quality. Another good thing about it is that the price has come down quite a bit, so it'll definitely be a good investment for photographers and others who use their camera frequently.