The Olympus OM2S, OM3 and OM4 are great cameras.... but they're also notorious battery eaters Here's a way to run the camera on a pair of AA penlight cells.
Rick Oleson's Photographic Resources
- An original cool solution by Rick to handle OM battery issues

The first step is to drill a hole in the battery cover to receive a 5.5mm DC power jack. The length of the jack is about the same as the height of a pair of batteries, so the jack's (-) terminal contacts the spring terminal in the camera's battery box. [The jack is Radio Shack #274-1582; cut off the solder tabs since you won't be soldering any wires to it. For the mating plug, use Radio Shack #274-1569.]

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Here's what it looks like at the base portion on the camera body.

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Next comes the battery pack: a AA battery box [#270-408 from Radio Shack], with a 1/4" hole drilled in it for mounting to the camera's tripod socket. I used an end mill chucked in a drill press to mill a recess so the screw head will fit flush to the bottom of the case. An ugly job, but it works; the battery boxes are cheap enough that I can make another one now that I have an idea of what I'm doing. Remember when wiring the case to the 5.5mm plug: in the OM cameras, the center terminal is (-) and the chassis is (+)!

Screws.jpg

For the screw, I took the shortest 1/4-20 screw I could find and cut it shorter so it wouldn't hit the bottom of the tripod socket. I milled off the head to a thickness of about 1/64" so it fits flush in the recess in the battery case. Since the screw slot was now gone, I drilled a couple of holes in the head for a spanner.

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Here's the battery case attached to the baseplate of the OM2S camera. The plastic shell of the plug was a little longer than the height of the battery case, so I cut the shell shorter and made the wire come out sideways so the camera won't rest on the wire.

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And here it is, all finished. It isn't compatible with the winder or motor drive, but you can use the motor drive coupling cover as a battery cover to use standard batteries when the motor is attached.

Credit: All Content and Images Courtesy of Mr Rick Oleson <Web Site> Email: rick_oleson@yahoo.com

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