Panasonic RC6099 - Manual (Page 7)

Operation
The sure time battery back-up is designed
to hold the present time and the alarm time
in the memory in the event of a power
failure or interruption. (Such as when
moving this unit to a different room.)
Whenever a power interruption occurs, the
digits on the clock display will disappear.
However, even though the clock face is
completely blacked out, the 9-volt back-up
battery will take over as the power source
and the present time and the alarm time
will be preserved.
Even if the power is not resumed by the
wake-up time, the buzzer alarm will acti­
vate.
Notes —
When the set is unplugged (not in use) for
a long time, remove the back-up battery to
prevent possible battery leakage.
Power failures may occur at any time of the
night or day and can be of a long or short
duration.
Most failures are so short that people don't
even notice the interruption. These inter­
ruptions do, however, affect clocks which
do not incorporate a battery back-up.
If the power is not resumed by the wake-up
time, the radio alarm will not activate.
If the back-up battery goes dead during a
power interruption, the present time and
alarm time must also be reset after the
interruption.
The back-up battery will be exhausted
after about 14 hours of total (accumulative)
use, (The battery life will vary depending
on the frequency of the power interrup­
tion.)
After a power interruption, the time shown
in the display window may not be always
correct (it may gain or lose about six
minutes per hour).
-
7
-