Post android 10 update phone's battery Found in weak condition in performance and charging time point of view. Adopted following steps and found improvement in battery performance.
1. Fully utilized battery (upto 1%), kept fast charging in 'off' mode.
2. Charged my Phone for about 3 hrs while in switched off condition.
3. Switched on the mobile, reviewed battery usage by different apps, found some apps running in background for a long time (like WhatsApp).
I just put these apps on sleeping mode when not using them. Found alot of difference in battery performance and in charging time.
