M1 Macbook Air Battery draining fast like draining 85% to 30% in overnight but battery health is
95%. I can’t know what is the issue ?
Was the lid closed and still battery drains faster when Mac is not in use bro?
yes bro.
Do share activity monitor screenshot. Sometimes, third party apps we installed consume more battery power even when the device is idle. If you have background updates ON, then if there is any system software update available, it downloads in the background. that could consume battery power and it happens for just one or two days. Not regularly.
If you are experiencing this problem for long time, do share the screenshot of activity monitor page bro.
then possibly it could be due to software update in the background bro. you have shared screentime page. go to spotlight search then type “activity monitor” press enter and you will see Windows Task Manager like details on screen.
That will give us clear idea of whats currently running. So charge your mac to 80% or above tonight and tomorrow morning when you open the macbook lid, take a screenshot of the activity monitor. That will give better idea.
sure bro i will check that
bro I had a update in my macbook for macOS ventura. after updating i had no battery draining issue in sleep mode. yesterday i had 93% charge and today in morning i checked and i had 91% of charge. and lastly thanks for giving tips to check the issue bro 
Welcome bro. That is normal reduce of charging overnight. sometime it could even be higher, when System Software update runs in the background. But it will automatically adjust based on your usage. Not to worry.