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John Whittaker
User level: Level 2 (394 points)

iPhone SE 2nd generation battery percentage not updating after overnight charge

Since iOS 27 (now 27.0.1) my iPhone SE 2nd generation, left to charge overnight, shows the same battery percentage the next morning as when charging started, e.g. 49%. If I then restart, it shows 100%. Alternatively, if I switch off and leave to charge, it charges to 100%. This is not really a problem, but I wonder if it is normal. The battery might need to be replaced but, as it still lasts for more than a day, I am inclined to wait until I change the phone.

Posted on Oct 6, 2026 2:34 PM

5 replies

John Whittaker Author
User level: Level 2 (394 points)

Oct 7, 2026 2:44 PM in response to Chattanoogan

Many thanks for the suggestions. I tried leaving it to charge for a couple of hours with Settings -> Battery open to see whether percentage and time remaining would update. They did and thereafter it all seems to have returned to normal, the lightning bolt now showing against a green background whereas previously it was gray. I have no idea why this worked but the problem is solved.

Chattanoogan
User level: Level 8 (43,489 points)

Oct 7, 2026 8:41 AM in response to John Whittaker

That would indeed seem to be “off-normal” behavior.


We’re still running 26 on our own SE3 — until the initial “touchdown” dust settles — w/o any similar symptoms.


A new thought:


Have you tried “flipping over” the lightning cable connector? We have one ancient cable which will only charge with “one side up” (but it’s mis-behavior is consistent across all of our Lightning-fitted devices)

Chattanoogan
User level: Level 8 (43,489 points)

Oct 6, 2026 3:03 PM in response to John Whittaker

Not at all meaning to insult your intelligence …


… but do you receive the sound, the jiggle, and see the lightning bolt when you plug it in?


Also, have you performed a full power-off restart?

John Whittaker Author
User level: Level 2 (394 points)

Oct 7, 2026 1:07 AM in response to Chattanoogan

The lightning bolt appears briefly when connected to power, but subsequently disappears, although evidently it is still charging. (I suppose I would feel the jiggle if holding the phone and hear the sound if it were not set to silent.) After leaving it to charge, the full power-off restart is needed to show that it has charged to 100%. What is missing is the possibility (available in previous iOS versions) of seeing how far it has charged without restarting. The available percentage is shown reliably when not charging.

Chattanoogan
User level: Level 8 (43,489 points)

Oct 7, 2026 2:49 PM in response to John Whittaker

Perhaps your phone was just starved for attention. 🥲

Originally posted at discussions.apple.com/thread/256371554