Introduction
This guide will teach someone how to take out the battery in the Polar M400 and replace it with a working one. A damaged battery could be due to lack of charge or submersion in water more than 30 meters. It could also be due to battery age and various malfunctions. Over time, excessive and wear can lead to battery damage. The Polar M400 has an internal, rechargeable battery. You can charge the battery over 300 times or two years before a notable decrease in its capacity. The number of charge cycles also varies depending on use and operating conditions. Once the battery is replaced, follow local waste disposal regulations and do not dispose of this product as unsorted municipal waste.
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Insert a standard paper clip into the holes on both sides of the watch that connect the watch's face with the wrist strap.
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Use the T5 head on the iFixit screwdriver to unscrew the four screws on the back of the watch’s face.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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Équipe
University of Maine, Team S1-G3, Diaz Fall 2017 Membre de l'équipe University of Maine, Team S1-G3, Diaz Fall 2017
UMAINE-DIAZ-F17S1G3
4 membres
7 tutoriels rédigés
25 commentaires
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?
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 -
