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Polar M400 Watch Battery Replacement

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  1. Polar M400 Watch Battery Replacement, Wrist Strap: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Insert a standard paper clip into the holes on both sides of the watch that connect the watch's face with the wrist strap.

  2. Polar M400 Watch Battery Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Polar M400 Watch Battery Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Apply an upward pressure to the holes until the locking pins release.

    • Use precision tweezers to remove the pins that connect the face with the strap.

  3. Polar M400 Watch Battery Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Once the pins are released, the old wrist strap should snap off.

    • Simply lock the new wrist strap into place.

  4. Polar M400 Watch Battery Replacement, Battery: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Use the T5 head on the iFixit screwdriver to unscrew the four screws on the back of the watch’s face.

  5. Polar M400 Watch Battery Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Polar M400 Watch Battery Replacement: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Gently remove the backing from the watch.

  6. Polar M400 Watch Battery Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Polar M400 Watch Battery Replacement: crwdns2935265:06crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Use tweezers to gently pry the golden sensor away from the battery.

    • Remove battery using the plastic opening tools.

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

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Nicholas Sanders

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University of Maine, Team S1-G3, Diaz Fall 2017 crwdns2935289:0University of Maine, Team S1-G3, Diaz Fall 2017crwdne2935289:0

UMAINE-DIAZ-F17S1G3

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Hello, thanks for the details !

The most tricky part: find the right spare part. I can’t find a replacement battery that could fit the original dimensions with reasonnable capacity.

Do you have any lead?

Vincent - crwdns2934203:0crwdne2934203:0

In case if anyone is still looking for the spare part I have just replaced my M400 battery with this one: https://www.aliexpress.com/item/10050045...
Replacement instructions were detailed enough to get my watch to work again.

Roman -

Bonjour

Pourriez-vous m’indiquer ou je peux acheter une batterie compatible ou originale

Merci à vous

ducellier - crwdns2934203:0crwdne2934203:0

where can i buy a batery for my polar m400? Link please. Thanks

lsmi_21 - crwdns2934203:0crwdne2934203:0

Once the battery is changed, the M400 does not work. Do you have to press any combination of keys?

lojobis - crwdns2934203:0crwdne2934203:0

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