Extreme battery drain in iPhone post update

Hello after 17.5.1 update i encounter extreme battery drain and life drop from 90% to 86% after update. Battery drains almost 50-60% in 4 hours without using it before update battery lasts almost day and half without charging!


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iPhone 11, iOS 17

Posted on May 23, 2024 2:00 AM

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Posted on May 24, 2024 7:56 AM

iOS 17.5 was fantastic in terms of battery. battery drain was 10% for every hour. (according to my use). as soon as I updated to iOS 17.5.1 there was drastic drop in battery life as now my battery goes from 80% to 15% in 3 hours ( same usage)

145 replies

Jun 13, 2024 8:38 AM in response to Peter_O

Update: 3 days on from my first post I was hoping for things to get better (with a 'fix' released by Apple..?) but they've actually become worse.


My iPhone 13 Pro battery crashes within half an hour of taking it off the charging cable. I am honestly at a complete loss as to know what to do and currently using a cheap PAYG for essential calls when away from home.


I've attached a few screenshots to show what happens when I remove the iPhone from the charger…100% (supposedly) to 12% in 31 minutes, with no activity other than taking the screenshots. Battery health is still showing 100%!



Extreme battery drain in iPhone post update

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