Any silver oxide battery will last much longer than any alkaline battery
in an OM with electronic shutter. Silver oxide batteries have a very
flat voltage curve as the battery discharges and don't drop voltage much
at all until the battery is exhausted. Alkaline batteries start
dropping voltage right away even though they may still be able to
deliver a strong current. But OM cameras with electronic shutters need
to see at least 2.2 volts from the pair of batteries or they'll shut
down with the mirror locked up thinking there isn't enough power to
close the shutter should it be allowed to open.
Just setting on the shelf my OM-2sp used to be "dead" with alkalines
after about 6 weeks. With silver oxides it was more like 9 months.
Chuck Norcutt
On 9/28/2013 8:43 PM, Andrew Fildes wrote:
> Also, as there is no off switch on many OM's, the trick was to use wristwatch
> grade batteries - SR44SW. These are designed for a constant slow drain.
> Regular SR44's or alkalines can go flat pretty quickly. It's what Olympus
> recommended but most people didn't know the difference.
--
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