Battery usage per app percentage usage does not quite add up

[Inminet]

Greetings,

Please look at the screenshots. I added each app percentage battery usage(~42%) and added it to the total battery juice left (~33%) and I add these to get 75% which is 10% short of 85%(max amount of battery I charge).

Is the samsung's battery usage app calculate it wrong? I can understand some error is normal, but this is 10% error we are talking about, not 0.1% error. Is this the case with everyone or is it only my device(s20 fe 5g)?

Samsung battery usage calculation

Samsung battery usage calculation 2

[kau]

Are you using always on display

[Inminet]

Yes, but that comes under one home ui right?

[Souraaav]

Nope, it doesn't come under one ui home

[ㅤ]

this long screenshot...🤥...
pls tell me tell me.. 😃 ..how to take this... long screenshot..

[Inminet]

When you take screenshot, you get a bar at bottom a second which gives you multiple options like scroll screenshots, edit etc.

[ㅤ]

🤦 maine toh yeh option band kr rakha tha.. 😂
isiliye mujhe nhi ptaa

[kau]

No are you using it always on or tap to show

[Inminet]

Tap to show

[mHappiee]

Device hardware like wifi, NFC, mobile data, etc also needs battery to run...
And some core ir system apps are not counted ig 🙃