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?Hi

I have the same problem battery had it and don,t want to garmin for a simple job.

Does anyone know of a replacement

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Welcome to Fixya !

There are TONS of Li-ion cell and mobile phone batteries as well as those sold to the RC hobbiest. Your best bet its to reach the nearest radio store and try to find a 3.7V Li-ion, 750 mAH battery with these exact dimensions (or smaller) and you will be fine. >305 battery dimensions:? H 33.5mm x W 35.0mm x D 5.5mm
Any battery with these specs should fit perfectly into your device.

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Posted on Feb 16, 2009

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Yep, we use bestbattery.biz, the battery forerunner 305 Battery is a direct replacement

Posted on May 21, 2014

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Hi and welcome to FixYa,

A possible replacement battery is available here and as shown below. The original battery has P/N 361-00026-00. The replacement would require a bit of modification on the power leads/wires.

Forerunner 305 battery - d030482.jpg

Procedures would be similar to a 205 as illustrated here.

fe6b565.jpg

Good luck and thank you for using FixYa.

Posted on Feb 16, 2009

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The battery is internal rechargeable lithium-ion. this is not recommended to be replaced at home but it can be done.

You will need to take the garmin apart, identify the battery, order a replacement and install it on the place of the old lithium ion battery.

this will void your warranty, best solution is to contact garmin and get it done with warranty. do at your own risk.

Posted on Feb 16, 2009

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Standard CR2032 ,this u can find any radioshack shop..

Posted on Feb 16, 2009

  • Lavatop Jan 25, 2011

    CR2032 is Not Correct. Totally different form factor.

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The battery can be replaced, you can buy it at your Garmin dealer or on the Garmin Website

Posted on Feb 16, 2009

  • Lavatop Jan 25, 2011

    ...also not true. The Garmin web site Li-Ion batteries are not for the 305, and look to me to be the wrong dimensions. They are listed as for the Nuviphone or some such.

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Go HERE

Posted on Feb 16, 2009

  • micromaster
    micromaster Feb 16, 2009

    for battery replacement better to contact Garmin dealer.

    it could cost $85.00 to replace the battery and do maintenance checks on it.


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http://ctorunner.googlepages.com/dismantleforerunner205

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http://ctorunner.googlepages.com/dismantleforerunner205

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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.
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