It's just human-creating inconsistency between third-party apps and system UI. Don't understand why Apple would do this.

I know there was a time it had a resolution of 5%. That just makes me sadder to see it moving backward.

So is it intended to be 1% granularity or 5% granularity?

@Rincewind Referring to "as accurate as it is intended to be", do you mean you are getting an 1% granularity battery level on iOS17?