03-11-2021 06:13 AM
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04-11-2021 05:52 PM
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10-11-2021 01:03 PM
I experience similar behaviour. This morning I was on about 70odd%, came out of "Bedtime" and "Flight" modes and it dropped to 58%.
"Sleep" wasn't syncing to the phone so I restarted the watch. It came back as 0%. All within 10 minutes.
I am thinking it might have a battery memory and that is where the corruption is happening?