No!
The LR-44 is the *alkaline* version of the ~1.5 Volt SR-44 silver cell, and
is the same as a MS76A. Clint is absolutely correct that it will not
last long (even though it's alkaline, not lithium). However, in a "double
digit" OM (e.g. OM-10) or in an OM-2[n,S], OM-3[ti] or OM-4[T] it will not
throw the metering off. Both alkalines and lithiums gradually drop in
voltage starting at about half life. The OM-4 and OM-4T are both finicky
about sufficient battery voltage for operating the shutter. Alkalines and
lithiums fall below the minimum well before actual end of cell life and the
shutter locks up (to recover, replace the cells or switch shutter speed
ring into one of the two mechanical speeds [red "60" or "B"]).
Best cells for the OM-4[T] are 303 or 357 silver oxide watch cells, which
translate to SR44W and SR44SW. They are slightly better than the silver
oxide SR44P or MS76 photo cells (the MS76A is alkaline). The watch cells
are designed to withstand the slight drain current of an OM-4[T] in
"standby" mode better than the photo cells can.
The lithium button cells C.H. Ling referred to are the Energizer 2L76BP,
Duracell 7K67 and Rayovac 867. These are twice the height of a single
303/357/MS76/SR44/etc. (all of which have the same form factor).
FYI:
The two bodies with meter accuracy sensitive to battery voltage are the
OM-1 and OM-1n. They were designed to use the 1.35 Volt PX-625 mercury
cell. Do not use a 1.5 volt PX-625A alkaline cell in them.
-- John
At 00:55 11/23/02, C.H.Ling wrote:
I think lithium button cell is 3V.
C.H.Ling
----- Original Message -----
From: <clintonr@xxxxxxxxxxxxxxxx>
> I believe these are actually lithium batteries, though I may be wrong --
> check the package. It they aren't "silver oxide" batteries, they'll go
> dead rather quickly. Use nothing but silver oxides.
>
>
> Tim Chakravorty wrote:
> >
> > I picked up a couple of Energizer Silver Oxide (LR-44) 1.55 v batteries
from
> > a local walmart.
> > The question is will a +0.1v throw the metering off ? Will I need to
compensate
> > for exposure ? Is it recommended at all ?
> > As far as I know LR-44s are 1.5 v batteries, I dont know why these ones
> > are 1.55v
> > Thanks,
> > Tim
> >
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