Nikon 2000 - Manual (Page 24)

Intr
oduction—First Steps
14
Any pictures taken before the time and date have been set will have a time
stamp of “0000.00.00 00:00.” If the time and date have not been set, a
flashing (“Date not set”) icon will be displayed in the top right corner of
the monitor when the camera is in shooting mode.
The Clock Battery
The camera’s internal clock-calendar is powered by a separate, rechargeable
power source, which is charged as necessary when the main battery is in-
stalled. If the camera has been stored for an extended period with the main
battery removed, the clock may need to be reset. The clock power source can
provide roughly twenty-four hours of back-up power after charging for about
six hours.