Originally Posted by
Dave Humphries
* a few more words regarding the "correct type":
I would definitely get the 9a, no question. The D5000, when it came out, suffered a recall because there is apparently a problem with the camera not working if you take a battery straight off charge and whack it in the camera. This will probably be because the terminal voltage is too high (it could be cell temperature related, but that isn't the reason given by Nikon), so while the difference between 7.4v (ELN9) and 7.2v (ELN9a) might not seem much, it could be the difference between occasional problems and trouble free usage.,