Hi there, @TamTam0876. Welcome to the Community Forums. Thanks for the details provided in your post about the issue with your Versa 3. I understand where your concern is coming from.
It seems like your Versa 3 ran out of battery overnight. With that being said, I suggest letting your Fitbit device to take charge around 2 hours to see if the screen comes up. If nothing happens after the time has passed, please follow the tips and recommendations provided here Why isn't my Fitbit device's battery charging?
If the issue with the battery happens again, may I know if you're using Snore Detection? If so, please note that the Snore Detection feature does impact your device’s battery, so we recommend charging your device to at least 40% before going to bed. For more information, see How can I use my Fitbit device to detect snoring and noise levels while I sleep?
However, I'd like to share with you that the battery life will depend on how frequent certain features are used in general. Because you're using an Always-On Display clock face, I'd recommend changing the clock face to another one made by Fitbit and monitor your it's behavior in the next day. Additionally, try turning off this setting by opening the Settings app on your watch > Display > Always-on display.
Hope this helps.
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