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Re: [OM] Battery for Spotmeter

Subject: Re: [OM] Battery for Spotmeter
From: Jim Brokaw <jbrokaw@xxxxxxxxxxx>
Date: Mon, 17 Dec 2001 22:43:50 -0800
on 12/17/01 1:16 PM, Bill Owens at wowens1@xxxxxxxxxxxxxxx wrote:

> 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
> wowens1@xxxxxxxxxxxxxxx
> 
The 640 battery used to be mercury, those are no longer available (a shame
since the Minolta HiMatic E and some small Olympus rangefinders used them).
Duracell makes an alkaline 640A that fits and powers the camera, but of
course the voltage is different. I don't know if that throws off the meter
or not, on the Minolta camera you need the battery to make the shutter
work... I suppose if the Pentax 1/21 spotmeter uses the battery with a
voltage regulator it might not matter.
-- 

Jim Brokaw
OM-1's, -2's, -4's, (no -3's yet) and no OM-oney... 


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