357's for later OM's. For OM1, look for a chinese Excell 625PX - silver
dioxide 1.5V in a 625 shape. They were rare here but are getting easier to
find and cheaper.
AndrewF
>Garth,
>
>Uh-oh....... Form factor.......
>
>Just took a look. BIG alkaline battery. Much bigger than a 357. :-(
>
>Anyone know where to obtain a collar to make a 357 fit without rattling
>around?
>
>Mike W.
>
>On 07/29, Garth Wood wrote:
>> To the best of my knowledge, there is no such thing as a 357-chemistry
>battery with the form factor of a PX625 (the original >mercury battery taken
>by the OM-1[n]). There *are* alkalines with the same form factor, however.
>If all that the mod is doing >is changing the electrical characteristics
>without modifying the battery well's physical dimensions, then you're stuck
>using a >battery with the same form factor as the original PX625 (which
>basically means PX625A's, that is, alkaline chemistry). On the >other hand,
>if the battery well's physical dimensions are also modified, then you can
>use a "silver 76" type battery without >problems (and the alkalines that
>have the form factor of a PX625 won't fit -- though ones with the form
>factor of a "silver 76"
>
>
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