Hello Mark,
My F6 is showing that it's down one notch after only a few days and a single roll. The batteries are new and in-date.
nevertheless it can be the battery being the reason. And despite displaying one notch less it can be that you can use these batteries for much films as usual. I have one set of Eneloop rechargeable batteries here, quite new ones, which from time to time also show one notch less than full just after 2-3 exposed films. But I get as much films from them as normally from the whole charge.
Independent from the camera I use them in. So it is certainly a battery-, and not a camera issue.
However, it also now reads a full charge again...
QED. Looks like an issue with the battery samples.
I've seen another thread on this issue but I couldn't see if it was resolved in any way other than a trip to Nikon USA.
Frankly, I just got my camera back from Nikon USA so I'm reluctant to part with it again, but if I need to do it maybe I can get the fix covered under their service warranty...
Opinions please!
I am using two F6 for years, both with MB-40 vertical grip and Eneloops. No problems.
There was a battery / battery indicator issue with earlier F6 units until serial number 0018754 as correctly said above. This can be fixed by Nikon service. All the later produced cameras are fine in this respect.
And the internal clock battery has nothing to do with it. This battery is only needed and used by the camera to keep the time / clock for the internal data back when
no batteries are in the camera.
Even if this internal battery is completely dead / broken, the functionality of the F6 is almost not affected at all. The only thing which is different with a broken/dead internal clock battery is when changing to new, full normal batteries after a normal battery change, is that you have to reset the internal clock manually to the correct time, if you want the correct time to be recorded with your film data.
That is all. If you are not interested in the correct time, you can simply ignore it. All functions of the camera are working properly.
A dead/broken internal clock battery can be changed by the Nikon service. But it is absolutely not necessary to change it. The internal clock batterey just offers a little bit more convenience.
Best regards,
Henning