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Repair and disassembly guides for Garmin GPS devices.

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How can I replace the battery?

The battery on my watch has become very unreliable lately. (Forerunner 405) It will die within 2 hours from the time I take it off the charger. How will I replace the battery myself, so I don't have to pay $70 and ship my watch to Garmin? Thanks for any help!

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Here is a link for a service where you can send in your watch and they replace the battery for you!

http://www.amazon.com/Garmin-Forerunner-...

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Here is a link i found for the replacement battery - but have NOT used.

http://www.akku-wechsel.de/shop/alternat...

Two other useful links for dismantling and replacing the battery are:

http://www.jimandkatrin.com/CodeBlog/pos...

http://sites.google.com/site/ctorunner/d...

Hope it helps

GONZO

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I ordered this 405 replacement battery and it came within a week.

http://www.thebatterystore.com/powerdisc...

I followed the instructions on the german website linked previously (with some modifications, as the spacing of the coin cell battery connector was too narrow.)

Works great thus far for my 405 watch.

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did you order the battery with any options? or just the bare cell?

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i ordered the 0 degree terminal but the spacing between the terminals was too narrow. so after modification, i essentially made my own version of the "wire leads" option, so that might be easiest.

Jack

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I was going to order a spare battery but thebatterystore wanted (needed) to charge $60 for international shipping which is a bit high for a $10 battery. This is apparently due to the regulations on shipping batteries.

Crazy!

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Most Helpful Answer

It is a soldered in battery - 3 milliA battery. This will requiring removing the back panel and unsoldering the old battery and resoldering in the new battery. I found a website that sells the battery for around 20 Euros (right under $30).

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Awesome, thanks for the help! Do you have any links to the website or other websites that have the battery? Also, did you mean 300 mAh? And how many volts? I'm sorry, I'm just having a little trouble finding it :)

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Did you find the website for the battery. I want to replace mine.

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here you go

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http://www.smallbattery.company.org.uk/s...

Try this link. Really helpful company. I've used the compnay before and they have always been excellent.

I'm just ordering one for my Forerunner 405, so fingers crossed.

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It is very difficult to replace the battery without damaging the seal ring.

Also the power connection is not easy if you don't have special tool

Also the battery is welded. I try to replace the battery damage the seal and finnaly bough a new Watch factory repaired with 1 year guarantty for$ 100. I already have the betl and the PC adapter.Also I managed

to located a battery but the cost was $ 45.

So my recommendation is to buy a factory repair watch.

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You can get the batteries that have the right solder tabs on ebay. I tried one of the generic ones and they it only lasted for 4 hours even though they claimed extended run time. I ended up replacing it with the genuine Garmin battery from Route JD and it runs like new... more than 8:30.

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Here is a link to a service you can buy where they replace the battery for you!

http://www.amazon.com/Garmin-Forerunner-...

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bad link - no longer works

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Chase will be eternally grateful.
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