They may have just put a resistor in to drop the 1.55v to 1.35v. The big
problem with the 625A and 625U battery is that as soon as you start to use it,
the voltage starts to drop.
I don't modify the 1 for the alkaline battery anymore as it is unreliable. I DO
modify the camera to take the STABLE 1.5V silver oxide battery. I also modify
the circuit to drop the voltage to 1.35V.
It is possible that the OM-2 meter is off (they tend to read about a half stop
high). You must use silver oxide batteries with the 2 . Alkaline or lithium
batteries create an error of up to 3 stops.
John
lion1 wrote:
> John,
>
> You may be the person that can help me.
> I have an OM1 That was serviced in late 94.
> At that time [I seem to recall] that the service order said they reworked
> the battery chamber to accept non mercury batteries. I have since been
> using Varta 625u's.
> The readings for this combo [OM1 and 625] are virtually the same as my OM2,
> less 1/3 stop, which I can put down to differences in the systems.
> Is this possible? I never get a reading that is 1 or more stops off.
>
> The repair shop does not have records that far back, so they are no help.
> Could they have changed something as to make the 625u give a constant 1.35v?
>
> Regards,
> Charlie Loeven
> Largo, Florida
>
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