My Apple Watch SE (2d) generation will go blank and restart even with a full charge when I am out running in temps below freezing. It usually locks up after 45 minutes. Once it warms back up, it will restart. Battery life is shown at 86% in Settings.
[Re-Titled by Moderator]
Apple Watch SE, watchOS 11
I still think that this is a battery capacity issue. Due to the cold temperatures the watch just shuts down, in order not to deplete the battery completely, which may cause more damage to the battery.
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For example, your battery may not last as long in cold temperatures
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copied from: Keep Apple Watch within acceptable operating temperatures - Apple Support
This happened to iPhones in the past as well:
If your iPhone or iPad gets too hot or too cold - Apple Support
I have had the watch for about 2 years and this is just now becoming an issue
Teens and 20s Fahrenheit. Not super cold. And it’s on my wrist.
I’m having the same exact issue. Same watch SE2. I believe they used a cheap battery in this budget model. After only 2 years the battery health is down to 73%.
My series 8 is doing the same thing so I don’t think they cheaped out on just your batteries! It’ll go from a full charge to 10% in a split second in cold weather, but if you restart it after a run it’s back at a normal charge again. Annoying.
How cold has it been? The Battery Health is definitely a factor as well.
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copied from: Keep Apple Watch within acceptable operating temperatures - Apple Support
Cold can have very serious complications for lithium batteries you might not want to use it in temps below freezing.
Apple Watch SE 2nd Gen goes blank and restarts even with a full charge
