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Garmin Fenix 3 HR Battery Replacement

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  1. Garmin Fenix 3 HR Battery Replacement, Battery: étape 1, image 1 de 2 Garmin Fenix 3 HR Battery Replacement, Battery: étape 1, image 2 de 2
    • Remove the five 7mm screws with H1.3 hex screwdriver.

  2. Garmin Fenix 3 HR Battery Replacement: étape 2, image 1 de 3 Garmin Fenix 3 HR Battery Replacement: étape 2, image 2 de 3 Garmin Fenix 3 HR Battery Replacement: étape 2, image 3 de 3
    • Use a plastic opening tool to remove the face of the device to expose the inner components.

    • There is one metal piece at the top of the face that is loose. This is the GPS antenna which will need to be removed as well.

    • Be careful with the ribbon that connects the motherboard to the display.

  3. Garmin Fenix 3 HR Battery Replacement: étape 3, image 1 de 1
    • Proceed to disconnect the ribbon from the motherboard using tweezers.

  4. Garmin Fenix 3 HR Battery Replacement: étape 4, image 1 de 2 Garmin Fenix 3 HR Battery Replacement: étape 4, image 2 de 2
    • Using a T5 screwdriver, remove the two 5mm screws.

    • The motherboard should now move freely.

  5. Garmin Fenix 3 HR Battery Replacement: étape 5, image 1 de 1
    • Another ribbon is attached to the top of the motherboard. Disconnect this ribbon.

  6. Garmin Fenix 3 HR Battery Replacement: étape 6, image 1 de 1
    • Disconnect wires connecting battery to motherboard.

  7. Garmin Fenix 3 HR Battery Replacement: étape 7, image 1 de 1
    • The battery is glued to the motherboard and will need pried off using the nylon spudger.

  8. Garmin Fenix 3 HR Battery Replacement: étape 8, image 1 de 1
    • Now attach the new battery with adhesive and reassemble.

Conclusion

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

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Victor Tanguy

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29 commentaires

Does anybody do It in a fenix 5?

Fernando Alcaraz - Réponse

Same question. Fenix five /+ guide on the way?

Erik E123 -

Thank you. It saved me around over £100 to change the battery myself. Garmin quoted around £121 for battery replacement for out of warranty watch. I bought the battery around £15 and followed the guide to change the battery myself in my Fenix 3 watch. My watch does not have heart rate monitor, perhaps the ribon at step 5 is for HR monitor as I didn’t have it in my watch. Thanks again for simple, detailed and easy to follow instructions.

Asif Shafiq - Réponse

Where did you get the battery?

Alex -

Amazon or other 3 Party Sellerie use google for search the are tonns of Shops wich sell it

Andreas Kahl -

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