John,
The cells that you spotted are most likely alkaline cells (625A). It
is the chemical process of the cell that determines the voltage. So for
silver and alkaline cells the voltage would be around 1.5-1.55 volts.
NiCad, NiMh and Lead-Acid cells yield about a nominal 1.2 volts.
Zinc-Air would give you about 1.4 volts and Mercury cells give 1.35
volts. There are many other technologies about, but currently
production of small cells is pretty much limited to the above. Larger
cells include Li-ion and many others.
So, even though they have reproduced the size/shape factor, it's not
likely that they have duplicated the voltage of the original mercury
cell.
There is a bit left out of this explanation to keep it simple. And,
Yes, the OM-1 meter is battery sensitive and Olympus has issued a
warning about using the alkaline cells (625A) as a substitute of the
correct one (625). At best it causes meter inaccuracy, at worst is
could cause damage.
Rand E.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
John Hudson wrote:
>
> Andrew Dacey wrote:
> >
> > Hi, I'm new to the list so I apologize if this has been covered. I
> > checked the FAQ and the list archive (briefly) and didn't find anything.
> >
> > I'm considering moving to Olympus for a few reasons. 2 of my biggest are
> > for weight and lack of dependance on batteries.
>
> A bit off direct topic but maybe of interest. I'm pretty sure I spotted
> some 1.35v Varta "silver" batteries the other day when I took in my
> 75/150 for a CLA. They looked the same size as the now hard to find
> 1.35v Varta mercury battery. Has anyone else spotted these 1.35v silver
> Vartas?
>
> John Hudson
> Vancouver, BC
>
> ps: In response to Andrew's enquiry aren't OM's rather battery dependent
> one way or the other?
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