Epson SOLAR Series Watch Movement Specification And Drawing page 15

Cal.
VR42B
1. Attention for solar cell unit
Pay attention not to touch and scratch the surface of the solar cell.
2. Dial transparency rate
Keep the transparency rate of the dial more than 30%.
(Effective aperture is φ27mm)
Each elements of solar cell must be kept the transparency rate.
3. The guideline of charging time is as in below
Illumination
(Lx)
700
3,000
10,000
100,000
4. How to set the secondary battery unit
Please set the exclusive secondary battery unit.
(The secondary battery is Titanium-lithium-ion battery without any environmentally harmful substances.)
Please install the minus part of the secondary battery towards inside of the watch.
If the silver oxide battery is accidentally set and charged, there is a possibility of battery explosion.
To prevent from the battery explosion, it is adopted safety structure not to charge the silver oxide battery
even if it is accidentally set.
Install the secondary battery unit under the circuit block cover as illustrated below A and B.
Check whether the secondary battery lead plate is surely connected to minus terminal. (Refer to the Fig.[2])
Attention-01
Source of light Environment
Inside the office
A fluorescent lamp
Sun light
Fine weather
Fig.[1]
A
(Approx.
Hours)
―
30W 20cm 52
Cloudy 16
5.3
Condition A : Time required for full charge
Condition B : Time required for steady operation
Condition C : Time to charge 1 day of power
A
B
19/Oct./'18
Date :
Rev. : 00
(Dial transparency rate = 30%)
B
(Approx. (Approx.
Hours) Minutes)
18
4
1.5
0.5
minus terminal
secondary battery
lead plate
Fig.[2] (Detail of A)
C
69
15
5
2
P. 10-01