User level: Level 1 (4 points)Battery suddenly drops by 50% while i wasn’t using my phone for just ~20 minutes. I experience this for the first time and I have refurbished with replaced battery(100%, unverified) but battery life has been good. It could just display percentage incorrectly because i’ve had 10% for like 25 minutes. Have anyone experienced something like this? (i have iphone 15pm updated to ios 27 5 days ago)
[Edited by Moderator]
Posted on Sep 19, 2026 9:53 AM
User level: Level 10 (199,348 points)Sep 19, 2026 10:00 AM in response to podsolnuh
I experience this for the first time and I have refurbished with replaced battery(100%, unverified)
And that....is the problem.
Take the iPhone back to the shop that did not install a genuine Apple battery and tell them to fix the problem or refund your money.
Apple will not help you unless they install a genuine Apple battery.
User level: Level 10 (105,996 points)Sep 19, 2026 10:03 AM in response to podsolnuh
Certainly your battery may be failing. We have no idea about its History, Charge Cycles or Battery Health. Refurbished/Aftermarket batteries are unpredictable and a battery that is already weak can certainly fail quicker when it is stressed with a higher demand to update and index those files after the update.
Think of it as driving around on bald tires, they may be fine when going 20MPH, but when you push them to 100 MPH, you could expect a blowout. Of course the cause is the quality of the tires in the first place.
Originally posted at discussions.apple.com/thread/256360616