Help!!!! I just got my D200 back from Nikon servicing, while out shooting the Marathon, my camera got an "err" message. Keep in mind, I had this same issue before sending it into Nikon for servicing, which was becuase of the 'autofocus' sensor according to Nikon. Once home, I changed the batteries to "Nikon" and went back to shooting with no problems. So has anyone else experienced this same issue with non Nikon batteries?
I agree with CharlieS. I have read too many tales of woe from users of aftermarket batteries. I do own one such battery that I bought before reading very much about them and I consider myself fortunate that it has given fairly good service for the past year or so. It claimed to have slightly higher capacity than the Nikon battery, but actually delivers between 10% to 15% *fewer* shots. At least it has not caused any other significant issues. I know that Nikon batteries cost more, but part of what you are paying for is the added quality control. For me, at least, that provides some peace of mind.
By the way, I never go out shooting without at least one backup battery. A DSLR with a dead/faulty battery is just an expensive doorstop.
I would also add longevity to the Nikon batteries, due to its prodigious battery consumption I had 4 additional Nikon batteries for my D200 within weeks of the original launch at the end of 2005.
Having sold my D200's and now running a single D300 they aren't needed so much due to the much better battery life on the D300, however all 4 batteries still give excellent shots and have yet to move off the starting block on the D300 battery life indicator.
So they have turned out to be great value as well as good quality!
Sorry to hear of your problem. I never got an "err" message though when I tried an aftermarket EN-EL3e in my D200 back around 2006 or so, it wouldn't work at all. The replacement wouldn't work either. I returned it and paid the difference for a Nikon battery and haven't had a problem since. Good Luck and Enjoy your Nikons!
It might be something as simple as just more voltage or amperage being provided by the Nikon battery. The original knockoffs did not have the correct chip within the battery, but they have figured enough out to get the knockoff to work, but it still could not work like the Nikon.
Also, just look at how Nikon handles battery recalls. The D70 battery recall is still in effect, even though it was issued several years ago.