This caught me by surprise. I was reading pixelated image about creating a “Oh Sh!t Kit” and he talked about having replacement clock batteries. For some reason, I had never thought about it. When I pulled the battery out of my old D40, or my current camera, the D90, part of the display is still powered, and the the setting and clock don’t get reset. Obviously there must be another battery.
First thing I did was try to look at the manual. I found a PDF of the D90 manual that you can download here. I found on page 28:¬†
¬†”The camera clock is powered by an independant, rechargeable power source, which is charged as necessary… two days of charging will power the clock for about 3 months.”
¬†This sure sounds like it is not user replaceable. So I did some more searching, and found this flicker D90 group discussion about his clock battery dying, and no talk about how to replace it.
I then found this Nikon support entry on replaceing the battery in the D3/D3x. Those cameras use the CR1616 “watch” type battery. That is not a rechargeable type battery. Is the D3 the only Nikon camera that has a field replaceable clock battery?
So good news D90 (other Nikons ???)¬†owners, one less think to pack in the Oh Sh!t Kit, but bad news in that if it does die, you will likely say more than “Oh Sh!t”.