>My experice is just the opposite. I have used Promaster >batteries ( which I believe are rebadged Delkin's) for years >and they are every bit as good if not better than the Nikon >battery that came with the camera. > >As far as I know the Promaster that I bought with my D80 back >in 2007 is still being used by the granddaughter, and it even >had a higher amp/hr rating then the Nikon. > >Personally, I would stay away from the unbranded e-bay >specials, but would not hesitate to use another Promaster. > >Pete
I had good experience with the ProMaster battery in my D5000. Used it quite a bit, never an issue. My mother-in-law is now using that body, and she doesn't even know which battery is which - there's no difference between them as far as she's concerned.
For some reason, I got all snobby and just bought Nikon batteries for my D7000s. Could be that's what the store had in stock when I purchased.