I took a screenshot of Battery usage at 1805pm when it was 53% charged. It was showing 15h 38m left. But it has completely drained at 02.50am after 8h and 45m instead of 15h and 38m.
Do you think with latest beta software updates battery 🔋 has improved?
If you notice any battery problem, please report it via the Samsung Members app, so that our developers can have a look into it 
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