My one (1) year old A54 was charged to 80%, and taken of the charger when I went to bed.
I picked up the phone when I woke up at about 7am today and charge was about 70%. I used a little duolingo and YouTube, total just over 1 hours. Now it is 11.30, and my battery is at 23%.
How can my, 1 year old phone just last only a quarter of the day of use?
Checking the battery usage, Contacts Storage, a basic background process/app, took >10% of my battery charge. I don't even know if this is the main culprit.
Not the first time I had raised battery drain issues. Threes after getting my A54, the drain was crazy even when left idle. Hence I had switched off, disabled, uninstall nearly all the Samsung automation, and at least I could get through to the evening. Note it is only till evening, not night!
I resigned that my battery drain issues might be causes by network issues and the A Series will never be as good as the S Series. However reading around, the S series also suffers from unexplained battery drain.
I'm envious of my wife's realme XT (4.5 years old) can still function from morning till bed time on a charge. Sigh. It will be three more years before my planned phone change. If by then Samsung does little to nothing to restore my confidence, I'll not entertain any future Samsung devices.
After you scan, can you reduce virus checkups to protect your apps installed , and you can do some references which one apps put in sleep good for you to uninstall. So your battery capacity gonna be 👍 
Same thing today, the Contacts Storage app used 11% of my battery during the day time.
It showed that 2.5 hours of CPU usage.
It showed that 2.5 hours of CPU usage.
