Introduction

We will be replacing the battery in the Garmin Fenix 2 watch. You should have a Torx T9 screwdriver on hand and a nylon spudger.

Parts

No parts required.

Use a Torx T9 screwdriver to remove these four .8mm screws and seperate the housing. Use a Torx T9 screwdriver to remove these four .8mm screws and seperate the housing. Use a Torx T9 screwdriver to remove these four .8mm screws and seperate the housing.
  • Use a Torx T9 screwdriver to remove these four .8mm screws and seperate the housing.

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Black Friday
Broken doesn't stand a chance.
Use a spudger tool to disengage the power ribbon from the main board. Once the ribbon is disconnected you can separate the bottom piece of the housing that holds the battery. Use a spudger tool to disengage the power ribbon from the main board. Once the ribbon is disconnected you can separate the bottom piece of the housing that holds the battery.
  • Use a spudger tool to disengage the power ribbon from the main board. Once the ribbon is disconnected you can separate the bottom piece of the housing that holds the battery.

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Use the spudger tool again and wedge it in between the battery and the housing, pry until the battery starts to separate from the adhesive holding it in place. Once you have the battery disconnected you are ready to replace it. Despite the fact that the metal spudger is shown being used in this step, make sure to use a plastic opening tool or nylon spudger to pry up the battery. The metal spudger has a much larger chance of puncturing the battery, and thus should not be used.
  • Use the spudger tool again and wedge it in between the battery and the housing, pry until the battery starts to separate from the adhesive holding it in place. Once you have the battery disconnected you are ready to replace it.

    • Despite the fact that the metal spudger is shown being used in this step, make sure to use a plastic opening tool or nylon spudger to pry up the battery. The metal spudger has a much larger chance of puncturing the battery, and thus should not be used.

I am looking at the battery you suggested on eBay, and it appears that there are wires attached to it. Exactly where do these wires connect? Do they require soldering in place somewhere?

Jamie - Reply

Good information, but :

- spudger not really needed, nail is enough.

- missing the one regarding the need for a soldering iron ! The old battery needs to be unsoldered and the new one soldered to the inside wiring. Not so difficult but soldering iron needed !

Got a spare battery on eBay (vendor is http://akku-wechsel.de). Delivery was very fast. After replacement I went from 6~8 hours life to 3~4 weeks :) So happy with the upgrade !

Pierre Colin - Reply

Conclusion

To reassemble your device, follow these instructions in reverse order.

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Brandon Barger

Member since: 02/13/2016

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IUPUI, Team 54-4, Wilson Spring 2016 Member of IUPUI, Team 54-4, Wilson Spring 2016

IUPUI-WILSON-S16S54G4

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7 Comments

can you tell us exactly which battery should be used? Thanks in advance!

fabrizionannini - Reply

Look for: RouteJD Inc PD3032 3.7V 200mAh - I found one on Ebay

homanchris -

Are you certain that's the proper battery? Garmin's website says the Fenix 2 has a 500mAh capacity.

https://buy.garmin.com/en-US/US/into-spo...

L P -

Garmin's website says the battery is a 500mAh capacity. Are you certain that is the correct one?

https://buy.garmin.com/en-US/US/into-spo...

L P - Reply

After some research on eBay the correct battery size should be PD3555 3.7V which is 500mAh.

Yang - Reply

How do I disconnect and reconnect wires from power ribbon?

Michael Rice - Reply

You need a soldering iron... I could do it without any experience doing so. Replacement battery I got online seems to give me a longer life that the original one. So happy I did the exchange ! :)

Pierre Colin -

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