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iOS 17 - big battery health drop
- Thread starter Drogba11
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Likely just recalibrated the readout. The battery was probably around 90% health but just not being acurately reported.
Battery Health % is a guess. Over time (weeks) iOS will re-calculate a best guess value. It’s never perfectly accurate — even says so
My launch 13 Pro Max still with original battery was 99% before and after the update.
I am glad I didn’t get a 14 Pro/Max those health percentages seem to be very low for only one year of use.
I am glad I didn’t get a 14 Pro/Max those health percentages seem to be very low for only one year of use.
I’ve upgraded every year since the 7 and never seen a battery degrade like the 14PM. 89% for me before and after the update.
Yeah. I truly regret getting the 14 Pro due to this. I have to get rid of it this year due to the terrible heat management and (therefore) battery health.
I’m also using a 3 year old 12 with battery capacity at 83% here. How are you finding battery life on IOS 17 so far compared with 16.6.
I’m deciding whether or not to update yet.
I’m going to be honest with you as I only installed yesterday so would need few days, I’m home for next 4 so don’t use phone that much, I know one thing when out and about and on 5g just eats battery on ios16, but I always have means to charge the phone so I never pay that much attention how long will last, this might well be 5g thing and not iOS, also my usage very so much where I can go all then without charging to needed to charge my phone twice in a day 😳
How? My launch 13PM is at 84%. I only charge overnight, rarely during the day or in the car. Although I am almost totally wireless charging... maybe that's the cause.
15PM arrives tomorrow and I want to give it the best chance possible...
I have a hard time understanding how installing software can change the health of the battery. There may be a change in the algorithm used to monitor the health and reporting of the battery condition, but iOS15, 16, 17, 18, etc. cannot make the battery degrade. Only charge cycles and possibly rapid charging can do that. Am I wrong?
yes and no. Software Update and in nay case network reset recalculates the battery health percentage. So, you are right, update does not reduce battery health by itself, but it aligns the numbers to reality (-
My iPhone 11 (bought in February 2021) was on 91% battery health before and after updating from iOS 15.?.? to 17 and it is still at 91% after updating to 17.0.1. I was afraid to update, due to battery anxiety. But all is well luckily.
Yikes. So I rarely ever charge overnight, I usually charge for an hour a day max. I don’t use wireless charging unless I have to or can’t find a lightning cable.
Then again I also don’t have a lot of apps and don’t use my phone much during the day. I go to bed with the battery around 60% each night and charge it for a hour or less when getting ready in the morning.
I hope the new iPhone 15 setting to stop charging at 80% helps. Also it sounds like they have a cycle counter now, finally.
All in all it makes me not want to trade in my 13PM this year or next.
