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Discussion Starter · #1 ·
Hi Guy's,
I have a vintage Casio F-8 that i purchased way back in 1979!
It needs a new battery, do any of you know which battery
fits this model???
On the back of the watch it say's: JAPAN W 452917 & 58F-8
Do you know what these numbers indicate?
Cheers to those who can help. :-!
 

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Open the watch and see what battery is inside. Be careful not to turn the watch while it is open (some quartz watches have loose parts inside).
 

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Yeah open the caseback, I'd love to see what a 70's battery look like :D
 

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Discussion Starter · #4 ·
There is no battery inside, that's why i'm asking what battery it requires!!! :-s
 

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At least try to post a picture of the watch with case back removed, depending on the size of the battery holder, someone might be able to help you.

I've seen a couple of vintage Casio watches with the 2020 battery.
 

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Discussion Starter · #7 ·
Ok, so i've measured the battery aperture and it looks as though
the original battery was 23mm x 2 or 2.5mm.
I know for sure it was a lithium battery and that it was 3v.
Does this shed any more light on the subject. :-s
Thanks for the help so far guy's. :-!
 

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Ok, so i've measured the battery aperture and it looks as though
the original battery was 23mm x 2 or 2.5mm.
I know for sure it was a lithium battery and that it was 3v.
Does this shed any more light on the subject. :-s
Thanks for the help so far guy's. :-!

So you could try either a CR-2325 or CR-2320, they are both 3V batteries.
 

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yeah the 2 first digits are diameter on lithium batteries, the 2nd two are depth

So a CR23(diameter)20(depth - obviously stick a decimal point in the last pair) or 2325 should be fine
 

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I also think the CR-2320 would fit better if there is a spring underneath.
 

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Discussion Starter · #12 ·
yeah the 2 first digits are diameter on lithium batteries, the 2nd two are depth

So a CR23(diameter)20(depth - obviously stick a decimal point in the last pair) or 2325 should be fine
....I've learnt something new today, thanks! :-!
 

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Discussion Starter · #13 ·
Ivt, Watchma & Brigalow, thanks for your input guy's.
I really appreciate your help. :-!
I remember having this watch for christmas in 1979.
It was my first LCD watch, just wish the strap had not perished years ago. :roll:
 
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