ps: I forgot to mention that OM-3s don't have electronic shutters so
shouldn't be very sensitive to the alkaline/silver oxide thing although
silver oxide will still be somewhat better.
Chuck Norcutt
On 9/28/2013 9:30 PM, Chuck Norcutt wrote:
> 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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