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Introdução

If the battery is not holding a charge as long as it should, or is failing to charge at all, use this guide to replace the battery. You will need a T6 Torx screwdriver, a T5 Torx screwdriver, and a spudger.

  1. Use a T6 screwdriver to remove the five 1.7 mm screws from the watch face. Use a T6 screwdriver to remove the five 1.7 mm screws from the watch face.
    • Use a T6 screwdriver to remove the five 1.7 mm screws from the watch face.

  2. Carefully lift the face off the watch base.
    • Carefully lift the face off the watch base.

    • Do not yank the face. A ribbon connector connects the face and the motherboard, and yanking could result in damage to the motherboard or ribbon.

  3. Use a spudger to lift up and free the screen ribbon cable's press-fit connector from the motherboard.
    • Use a spudger to lift up and free the screen ribbon cable's press-fit connector from the motherboard.

  4. Set the watch face aside.
    • Set the watch face aside.

  5. Locate the antenna, which is located on the motherboard.
    • Locate the antenna, which is located on the motherboard.

  6. Carefully remove the antenna, and set it aside.
    • Carefully remove the antenna, and set it aside.

  7. Use a T5 screwdriver to remove the two silver 1.4 mm screws from the motherboard. To avoid losing or dropping the screws once they are loose, use tweezers to extract them. To avoid losing or dropping the screws once they are loose, use tweezers to extract them.
    • Use a T5 screwdriver to remove the two silver 1.4 mm screws from the motherboard.

    • To avoid losing or dropping the screws once they are loose, use tweezers to extract them.

  8. Lift the watch and turn it over one hand. The motherboard should fall out easily. When reinserting your motherboard, slide it in instead of pressing it. The motherboard must go beneath a lip at the base of the watch body.
    • Lift the watch and turn it over one hand. The motherboard should fall out easily.

    • When reinserting your motherboard, slide it in instead of pressing it. The motherboard must go beneath a lip at the base of the watch body.

  9. Using the spudger, separate the battery from the motherboard, which are both held together with a mild adhesive.
    • Using the spudger, separate the battery from the motherboard, which are both held together with a mild adhesive.

Conclusão

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

10 outras pessoas concluíram este guia.

11 comentários

Ruined my watch… The battery connection socket ripped off with the battery connector…

I have taken apart phones and laptops in the past without issue, so I am not inexperienced by any means. I was as careful as possible.

John Smith - Responder

Excellent guide - thanks! My Fenix3 wasn't charging any more so following your guide I replaced the ‘dead’ battery with a new one with ease. However, when reassembled, the new battery worked but would not charge. I took it apart again, and found slight corrosion or gunk on the motherboard terminals where they contact the inner side of the charging pins. After a good clean with meths and a cotton bud I popped the original battery back in, reassembled it, and hey presto! it started charging! Very happy!

Nick Coldham - Responder

I appreciate the guide as my Fenix 3 after 6 years of owning it could barely make it 24 hours without charging it.

The only thing I’d add to the guide is that you can reuse the adhesive from the existing battery as it’s only double-sided tape. Other than, it went flawless!

Roy J. Villarreal III - Responder

Thanks for this. Just did it successfully. A quick note, when you are separating the battery from the motherboard, it pulls up/perpendicular to the device and not parallel to it as I had initially thought. Luckily I did not break the battery connector to the motherboard. When I put it back in I needed to push it towards the motherboard to properly seat it. Look closely to make sure no part of the connector is sticking up, even a hair or it will not work.

Michael Reid - Responder

Worked perfectly! Thanks a lot

Francisco Rodríguez - Responder

Nice guide, thanks. However after battery replacement the watch dont switch on anymore. When it is connected to the charger appear on the screen battery 100% and time but, when I disconnect it stay off and dont react to the buttons commands. Anyone knows what could be happen? Thanks a lot

Rogerio Fernandes - Responder

Mine does the exact same thing. It no longer turns on. It says battery 100% on charger but as soon as I remove it from charger it turns off again and won’t turn on.

gregwhiteshark -

I noticed some glitching happening after I changed my battery. In my case, loosening the T5 screws that hold the motherboard worked (I guess I had too tight). Good luck!

Raimar Bylaardt II -

I have the same issue, did anyone find a solution to the not turning on and 100% on charger issue?

Mike P -

The battery I received from iFixit doesn’t work. When I tried it, the watch does not turn on. When I put watch in the charger it comes on and says "Battery 100%” but as soon is it’s unplugged from the charger it turns off again and is unresponsive. I put the old garmin battery back in and it works again. Will be returning replacement battery to ifixit.

gregwhiteshark - Responder

Aloha! Not difficult at all. Thanks for the great instructions and pictures. I’d add one note: when putting the T5 screws back on the motherboard make sure they are not too tight! My watch started glitching and showing the logo randomly. I reopen the watch and loosen it a quarter turn and it is working fine now. Also, I did not pull the screen ribbon but was careful and it worked fine.

Raimar Bylaardt II - Responder

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