Question about Garmin GPS 12 GPS Receiver

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Batteries leaked acid. How do I crack open to clean?

I left the the batteries in my 8 year old Garmin GPS 12 had the batteries leak acid. Can anyone tell me how to crack open the casing? There is a very small screw at the bottom of the unit but it seems to just hold the battery case lid. There is also a small hole in the back (under the rubber cover but a scre driver just goes right through. I can't feel a screw in there. I would like to open the unit and clean it out so hopefully it can still be used. I called Garmin Tech support and they said it was worth a try but no one could tell me how to disassemble the unit.

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  • StillStrande Feb 07, 2009

    I have the identical problem.


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Just pry it open (gently) with a flat bladed screwdriver. It's glued together with silicone seal. To put mine back together, I scrapped thoroughly to get the old stuff off, crazyglued the corners, then later filled the gap with silicone sealer. Easy.

Posted on Feb 08, 2009

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Yes, it is indeed glued along the edges. As someone else mentioned, very carefully pry the case apart along the indented line that encircles the unit.

I've got mine open now, but looking at the battery compartment, I might have to drill a very small hole in one of the tubes, to remove the battery that is stuck at the bottom.

Posted on May 31, 2009

Iread somewhere that it was utrasonic welded

Posted on Sep 29, 2008

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Chances are it is glued shut, or if it's like a similar era Eagle Explorer, has two torx screws under the serial number sticker, and a gasket everywhere else.

Glue can sometimes be softened with a heat gun.

Posted on Sep 18, 2008

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Inside you will also notice the surface mount Intel 386 Chip. which is the main processer.
This has nothing to do with the battery but I found it interesting that a chip in a computer from the mid 80s worth over $3000 then, still has a use.

When you have soldered the new battery into place you need to either glue or tape the unit back together. Be careful not to damage the other parts around the battery.

Always keep charged batteries in the unit when not in use.

Hope this helps.


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