Yashica Electro 35 GS battery fix

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The Yashica Electro 35 GS is a rangefinder camera manufactured in Japan between 1970 and 1973. It features a 45 mm f/1.7 lens with aperture range up to f/16. The camera uses aperture priority auto exposure with shutter speeds ranging from 30 sec to 1/500 as well as a bulb and flash sync setting.
The Electro 35 GS was originally designed to be powered by a PX32 5.6V mercury battery, but because of environmental concerns, mercury batteries are no longer produced. In stead a few other options are available. I chose a 6V silver oxide battery, labelled 4SR44. There is also an alkaline version called 4LR44, but alkaline batteries loose voltage when used, which could result in incorrect metering. The battery itself is too small to fit in the camera’s battery compartment, however a quick fix solves that problem.

What you need is:

  • A ruler
  • A utility knife
  • A pencil
  • A piece of rubber tube or garden hose with a 16-17 mm outer diameter. I used a piece of soft 16/12 tube for aquarium pumps bought at the local pet store .
  • Aluminum foil

Now, you need to create an adapter for your battery. The total length of battery plus adapter is going to be 4 cm. The 4SR44 battery itself measures 2.5 cm, so what is missing is 1.5 cm.
Cut a piece of tube 2 cm long. This allows for the battery to be inserted 0.5 cm into the tube. Make sure you don’t insert the battery too far into the tube. It fits very tightly and thus is very hard to pull out if inserted too far.
Take a piece of aluminum foil and curl it up to fit inside the tube. Put the tube on a hard surface, standing up and stomp the foil inside the tube with the back end of a┬ápencil. Repeat this till you have a 1.5 cm long aluminum foil plug filling up one end of the tube and 0.5 cm of free space at the other end. Make sure the foil sticks out just a little bit, so it can connect to the electrode in the battery compartment – but not too far as it might short circuit everything by accident.

_A1P0185Now put the battery into the tube and insert it into your camera’s battery compartment. I prefer to put the + end inside the tube, but you can do it the other way around, if you’d like.

Use the camera’s built in battery checker to ensure everything is connected properly.

That is all. Enjoy shooting your awesome rangefinder camera!

PS: This should apply to all Electro 35 models as far as I know. Please correct me, if I am wrong.