Overcharging Prevention Function; Power Save Function; General Reference For Charging Times - Citizen B11 Instruction Manual

<Overcharging Prevention Function>
The overcharging prevention function is activated when the secondary battery is
fully charged so that it is not charged further.
<Power Save Function>
When power is no longer generated as a result of light not shining on the solar cell
continuously for 2 hours, the second hand stops at the 12:00 position and the watch
enters the Power Save state to reduce power consumption of the secondary battery.
The minute hand stops simultaneous to stopping of the second hand. The hour
hand continues to keep time by moving at one-hour intervals, and the date changes
with the movement of the hour hand. The power save function does not operate
when the crown is pulled out.
Note: The power save function is not activated even when power is not generated
as a result of light not shining on the solar cell during the time the second-
ary battery is fully charged and the overcharging prevention function is
activated.
<Canceling Power Save>
The power save function is canceled when the solar cell is exposed to light and
power generation is resumed. The minute and second hands advance rapidly to the
current time and begin moving.
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6. General Reference for Charging Times

The time required for recharging varies according to the model of the watch (color
of the dial, etc.). The following times are shown below to serve only as a refer-
ence.
*Recharging time refers to the amount of time the watch is continuously exposed
to light.
Charging time
Illuminance
Environment
for 1 day of
(lux)
operation
Inside an ordinary
2.5 hours
500
office
60-70 cm(24-28in.) under
1.5 hours
1,000
fluorescent light (30 W)
20 cm(8 in.) under
26 minutes
3,000
fluorescent light (30 W)
Outdoors, cloudy
10,000
weather
Outdoors, summer,
7 minutes
100,000
under direct sunlight
Full recharging time: Time required for recharging the watch from the stopped state to fully charged.
Charging time for 1 day of operation: Time required for recharging the watch to run for 1 day at 1-
second interval movement.
Charging time
Charging time from the Charging time
stopped state to 1-
from stopped state
second interval
to fully charged
movement
53 hours
26 hours
9 hours
9 minutes
3 hours
50 minutes
470 hours
216 hours
69 hours
24 hours
16 hours
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