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Problem with Garmin Forerunner 305 GPS Receiver

forerunner 305 battery replacement

Thank you for helping with replacing the battery in my forerunner 305, but I would like to know what adhesive you used to re-assemble the top.
Thanks

Posted by avatar on Jul 14, 2008

    • By avatarGuest May 18, 2009

    • Where did your replacement battery from?

    • By avatarTheRedDevil Nov 12, 2008

    • I have used the 305 forerunner for just over a year. It has been fine until recenetly when i charge until i get the 'battery charging complete'. I used for 1.40 on Sunday and onTuesday when i turned it on got 'battery low' after 10 minutes it ran out of power. Is this the battery needing replacing?

    • By avatarGuest Oct 12, 2008

    • My forerunner does not even start without USB connection

    • By avatarrendog8 Aug 07, 2008

    • the battery on my garmin forerunner 305 (bicycle) will not hold a charge for more than 45 minutes, and I suspect it needs replacement. How do I go about doing this?

Solutions (2)

Best Solution

Automotive silicon/gasket maker.

Use a tooth pick to put a VERY small amount of silicon around the entire seam. Put the two half's together and wrap tightly with electrical tape. Test the unit immediately to see if it powers on and off. If it does not open it back up and raise the small prongs that make the connection from the bottom half to the top half.
If any silicon squishes out the sides wipe with water and a rag.
Let the unit sit over night. In the morning remove the tape.

    • By avatarhighfly Jun 08, 2009

    • A local battery specialist should be able to match your battery and be able to give you a replacement, just take the original in to them. The problem is the battery is soldered in a can't just be unplugged and removed. It has to be de-soldiered and re-soldiered. DO NOT solder or de-soldier directly on the battery or it will be ruined, possibly explode.
      If you an not comfortable with this or wondering what I'm talking about, it probably should not be attempted.
      Shame on Garmin for making this such a production to have to replace the battery.

Notes on how to replace the battery here http://www.jimandkatrin.com/CodeBlog/post/Forerunner-305-Battery-Replacement.aspx

Use RTV silicon to re-seal the case, as stated by the other posters.

  • By Author imageebike Feb 11, 2011

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