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14. General Reference for Charging Times of
Solar-Powered Watches
* Below are the approximate times required for charging when exposing the watch dial
to light continuously.
Please use this table as a reference only.
Environment
Illuminance
(lx)
Charging Time (approximate)
To keep working
normally
for one day
To start working
normally when
the rechargeable cell
is empty
To charge fully
when the rechargeable
cell is empty
Direct sunlight
(Outdoors)
100,000 2 minutes 45 minutes 9 hours
Cloudy (Outdoors) 10,000 12 minutes 2.5 hours 45 hours
Less than 20 cm
from 30 W
fluorescent light
3,000 40 minutes 6.5 hours 150 hours
Indoor 500 4 hours 45 hours āā
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