Windows 10: I have a problem that windows default lockscreen draining my battery overnight

I have fully charged the laptop, leave it in sleeping mode and in the morning it was empty. I have checked the report within 24 hours for the battery. It was shown that windows default lock screen consumes more than 70% of the battery?

:)

 

Battery draining overnight

Windows records battery levels at [undefined] intervals & at power source changes. Perhaps there is something about it checking the proper level at restart that kicks the SysTray meter. If you are interested, Event viewer logs the battery readings Log - System Source - Kernel-Power EventID - 105

I set up monitoring of them in an Event viewer, Custom view but never found any use for it. My January 2019 battery is still at 100% Full charge capacity / Design capacity but some SysTray readings vary - as you can see in that diagram, it shows as being at 98% charge despite SysTray showing 100% charge. I wonder if the SysTray indicator itself is only intended to be accurate to within 3% or so anyway [the info simply does not exist]. And the abbreviation that made my brain melt earlier was supposed to be NiMH. They often needed their SysTray meters recalibrating. Denis

 

Battery draining overnight

I agree with you. I regard battery draining as a waste of battery life. And it is the same advice that was given in the nineties for NiCd & MiMH mHiH MIHm that other common battery type from that era. Perhaps they are just regurgitating what they always said without any notion of whether or not it is still appropriate. I have one computer that only displays battery up to about 96% in the SysTray and I decided to live with the inaccuracy. Denis