Why is my iPhone battery draining overnight in a linear path from 90% to 0%? From the screenshot, phone activity was lowest during this period so what is forcing the drain? Thank you
iPhone XS Max, iOS 15
I think your battery is self discharging
Test it like this power off, off charge test
Check your iPhone battery for Self-Discha… - Apple Community
See the apps that affect your battery overnight (I can only see "Insight Timer" at 61%). What else?
Also, what is the maximum capacity percentage after tapping on "Battery Health" in your screenshot?
Regards
Giulio
LD150,
interesting, thank you! Should I try updating my iPhone to the latest ios 16 whatever? I’m still running ios 15.5. Or if the test results in positive self/discharge, will the phone require a new battery replacement?
You could update if the phone passes the test, but as the test is powered off the iOS is not relevant.
If it fails the test your problem will be what I had last year. Apple will not like changing a battery at 85% for some ideological reason even if you are willing to pay. You may have to involve Apple Support and inform them of the test results (Apple do not have this testing in their toolbox and remote diagnostics may not detect it.)
Please come back either way
Giulio,
Battery health is 85%. I have NO activity after 9pm and that’s when the battery constantly drains in a linear fashion. See screenshot below. Any ideas?
iPhone Battery Draining Linearly Overnight
