Walt Wayman wrote:
> The Leica M6 TTL manual says to use either two 1.5 volt silver oxide button
> cells or one 3 volt lithium cell for the exposure meter. (Everything else is
> mechanical.) I ordered a half dozen 3 volt lithium batteries on line, and the
> folks I ordered from, apparently by mistake, sent me a dozen. I'm not
> complaining, but I'll never use all those in the Leica -- doubt I'll live
> that long -- so can I use them safely in an OM-4 or OM-4Ti?
>
Safely, as in will not damage the camera? Yes. Unless the scenario
outlined below leads to irrational damage by the user.
Safely as in will not cause mental and emotional damage in the user,
Possibly not.
The problem is that it doesn't take very long before the battery drops
voltage enough under the load of the shutter that it causes the camera
to lock up. The test light/sound says it is ok, you run the shutter dial
down to red 60, the mirror drops, and the next shot is fine. And a few
minutes later the next shot is fine, and so on, until you take a few
shots in fairly quick succession - and somewhere in the run of shots, it
locks up again, only to recover after a bit.
It takes it some time, increasing with age and use, to recover from the
voltage drop from a heavy load, leading to symptoms that may easily
cause the user to believe the camera suffers from some sort of
intermittent failure.
Been there, done that, but only once. And fortunately, I realized what
was happening after trying a set of 357s in the camera.
So, if you need to burn 'em, just keep in mind how they may make the
camera act and act accordingly yourself. And take back-ups.
Or offer the extras free for postage to other Leicaphiles.
Moose
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