Battery drains very fast

anybody noticed that after upgrading to android 10 ROG2's battery drains from 100% to 97% suddenly? it's happening with me even after factory reset. and the SOT time between 100 to97% is only 15-20minute
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My asus max pro m1 battery drain very quickly.screen on time hardly 6hours.so you will gave me a latest update for my asus max pro m1battery drain issue fixed
Sorry wrong forum this is Rog 2 forum:)
I have a ZenFone2 laser and the battery drains fast.don't know what to do