The 640 is a large mercury cell - pretty much extinct. You may be able to
adapt a zinc-air or silver cell as per OM-1. I have one or two left for my
Pentax Spotmeter so I haven't investigated such a conversion.
Gary Edwards
----- Original Message -----
From: "Bill Owens" <wowens1@xxxxxxxxxxxxxxx>
To: <pentax-discuss@xxxxxxxx>; <olympus@xxxxxxxxxxxxxxx>
Sent: Monday, December 17, 2001 3:16 PM
Subject: [OM] Battery for Spotmeter
> I just received my Pentax 1/21 Spotmeter from ebay. I want to replace
both
> batteries, one of which is a common 9V battery. The other battery appears
> to be dead and is labeled "640". Does anybody know if this battery, or
its
> equivalent is still available?
>
> Bill, KG4LOV
.
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