Question about Garmin Forerunner 305 GPS Receiver

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Forerunner 305 battery

Is the Forerunner 305 a common battery that is easy to find?

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  • flyer1950 Aug 09, 2008

    My 305 refuses to turn on or show "charging" when plugged in to either the USB port or the wall charger.

    I've used it daily for 7 months and it worked on today's run but failed when I tried to download the data.

  • dandrews249 Aug 28, 2008

    I have the same issue. Garmin will rebuild the unit for $90, but am wondering where I can get a battery for the unit. The IPOD replacement almost fits, but is barely too long. Any luck finding one?

  • Anonymous Apr 10, 2009

    My Garmin Forerunner 305 GPS receiver will not charge either (in cradle).



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It's been two weeks since i bought my IPOD ,but haven't played because of these battery problems.

Posted on Mar 04, 2009


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1 Answer

Can't find satillittes

Yes, resetting the Forerunner 305 would be just like resetting the Edge 305. If you are still unable to locate satellites with the Forerunner 305, please go to the following page on the Forerunner 305 Main Menu > Settings > General > About Forerunner and reply with your software version and GPS version.


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I have a Garmin Forerunner 305. When I connected it to my PC It started to charge right away and then made an attempt to upload the data. The upload failed, although indicated it was successful on the...

the Gps should be on when you connect to the computer even if the battery is not good
it could be that it overloaded and the fuse burned
I fix the GPS
i am in New York

Sep 17, 2010 | Garmin Forerunner 305 GPS Receiver

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Forerunner 305 GPS Receiver: Is it possible to change the battery in a Garmin F...

Yes you can. Go to the Garmin Website and simply email them asking for the price of the battery and instructions on how to replace your specific model and serial number as they changed in mid year many times.

May 03, 2010 | GPS

3 Answers

Garmin Forerunner 305 won't turn on and won't charge. Is there a fix or is this it for the device?

Look at

You can soft reset or hard reset the device. Hard reset deletes all data.

Apr 01, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

GArmin 305

It's not easy to change... here is a link showing how to take it apart.

A local battery shop should be able to find a replacment but it has to be soldiered in...

Nov 26, 2008 | Garmin Forerunner 305 GPS Receiver

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Replacing battery on Forerunner 305

Well it is an accumulator instead of a battery so just recharge it.
If the accumulatoris gone I think you have to use the garmin support


Aug 11, 2008 | Garmin Forerunner 305 GPS Receiver

1 Answer

Battery change

They are not easy to get apart see link....

you might be able to find a battery at a local battry shop, but they do need to be soldiered in place.

Aug 08, 2008 | Garmin Forerunner 305 GPS Receiver

3 Answers

Forerunner 305 battery replacement

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.

Jul 14, 2008 | Garmin Forerunner 305 GPS Receiver

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