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iyiyi

macrumors member
Original poster
Jan 13, 2013
82
17
I'm really confused. Half of what I read says that wireless charging is actually better for your phone's battery and half say it's terrible. I really want to keep my battery in good health. Is there any "definitive" answer to how wireless charging effects a phone's battery over its life?

I am using a 14 pro max and I would be using the genuine apple charger. Thanks for the input
 

BugeyeSTI

macrumors 604
Aug 19, 2017
7,145
9,033
Arizona/Illinois
Depends how long you're going to keep your device. Wireless charging is definitely worse for battery life due to the heat generated and inefficiency of the charging process. Wired charging your device at low voltage over a longer period of time is less destructive but you can't stop the battery from deteriorating no matter what you do. If you upgrade every 1-2 years I wouldn't worry about it and if you don't, Apple will replace the battery relatively cheap so it really doesn't matter. Just use your device and charge it when you need too. If your worried about it, use a smart charger with automations that will charge when your device falls to 35-40% and stops charging at 80-85%..
 

now i see it

macrumors G4
Jan 2, 2002
11,225
24,163
“Harming” the battery is actually on a sliding scale. The least “harm” that can be done to a battery is to keep it at 40% charge and not use it. Everything beyond that is more harmful.The bigger the depth of discharge, the more harmful. The higher it is charged, the more it harms the battery.
Using a lithium ion battery is a matter of being realistic with its use. Want a battery to last a reasonable length of time? You’re going to ‘harm’ it by charging it up.
Want a battery that doesn’t take ages to charge? You’re going to harm it a bit charging it faster than slower.
At some point, you've got to control the battery and not let it control you.
Just charge up the sucker with any method Apple recommends and forget about it.
 

PauloSera

Suspended
Oct 12, 2022
908
1,392
I'm really confused. Half of what I read says that wireless charging is actually better for your phone's battery and half say it's terrible. I really want to keep my battery in good health. Is there any "definitive" answer to how wireless charging effects a phone's battery over its life?

I am using a 14 pro max and I would be using the genuine apple charger. Thanks for the input
Maybe stop reading and just use the phone like normal. Spoiler Alert: it will continue to work fine.
 

MegaBlue

macrumors 6502
Sep 19, 2022
358
858
Tennessee, United States
My partner and I both almost exclusively wirelessly charge. We both use a MagSafe charger every night, as well as having a MagSafe charger on both our desks. We do have one lightning cable that we keep in the living room and then we use lighting in our cars.

My launch 13 Pro was at 88% battery before I turned it in (used iOS 16 betas), and his launch 13 Pro was at 96% battery (didn’t use 16 betas). Both our launch 14 Pros are currently at 100%.

Either way, it’s too convenient for me, and getting a new battery is accessible to me if I need, so I’m gonna always use it and prefer it.
 

PauloSera

Suspended
Oct 12, 2022
908
1,392
My partner and I both almost exclusively wirelessly charge. We both use a MagSafe charger every night, as well as having a MagSafe charger on both our desks. We do have one lightning cable that we keep in the living room and then we use lighting in our cars.

My launch 13 Pro was at 88% battery before I turned it in (used iOS 16 betas), and his launch 13 Pro was at 96% battery (didn’t use 16 betas). Both our launch 14 Pros are currently at 100%.

Either way, it’s too convenient for me, and getting a new battery is accessible to me if I need, so I’m gonna always use it and prefer it.
This is the answer. Just use your phone. Don't abandon convenience because of inevitable battery degradation. The battery is going to degrade, you can't stop it. But it will be several years before that degradation even becomes noticeable in every day use. And at that point, you probably should be trading up to a newer phone. And if you don't, you can replace the battery.
 

Jackbequickly

macrumors 68040
Aug 6, 2022
3,117
3,213
I'm really confused. Half of what I read says that wireless charging is actually better for your phone's battery and half say it's terrible. I really want to keep my battery in good health. Is there any "definitive" answer to how wireless charging effects a phone's battery over its life?

I am using a 14 pro max and I would be using the genuine apple charger. Thanks for the input

‘You battery will last the longest if you plug it into an Apple 5 watt charging clock. Take a while to charge it but will never get warm while charging.
 

now i see it

macrumors G4
Jan 2, 2002
11,225
24,163
Got to remember, that  engineers only want to hit a specified target for cycle count vs battery capacity remaining.
That magic (made up) number is 500 cycles with 80% remaining capacity.
That’s their goal. If the charger and battery combo make it that far, they’ve hit their mark and they’re done.

500 cycles with 80% remaining capacity is pretty horrible battery life, but that milestone is acceptable to apple. You’ll get there by charging to 100% every day and leaving the phone plugged in all night.

If you want to your battery to last longer than that - a lot longer, (like outlive the useful life of the phone) then other measures need to be taken, like not charging to 100%, using smaller chargers, minimizing depth of discharge etc.
 

Abstract

macrumors Penryn
Dec 27, 2002
24,873
911
Location Location Location
Use a 5W charger. 👈👈👈👈👈

As mentioned already, charging from 0% hurts the battery. Charging to 100% hurts the battery.
Heat is bad for the battery.

Some people choose to charge as infrequently as possible because “charging is bad”, but honestly, charging from 10% to 100% is worse than charging from 40% to 100%.

Wireless charging is probably worse for the battery because it’s inefficient, generating lots of heat, and still takes longer than charging via cable.

It may shorten the useful life of your battery by a few months, but ultimately, all batteries need to be replaced eventually. It’s unavoidable.


Personally, I don’t charge at night. What I do are a bunch of smaller recharges (using a 5W charger) whenever I can.

I may charge for 40 minutes while walking my dog, 20 minutes while I shower, 30 minutes while I’m eating breakfast. My charge generally stays within the 30-80% range at all times. I also have a charger at my desk at work for short bursts of charging.
 

Steve121178

macrumors 603
Apr 13, 2010
6,454
7,122
Bedfordshire, UK
It doesn't do the battery any good long-term due to the heat produced. But if you change your phone every 1-2 years then it really doesn't matter as you'll never be in possession of the device when the battery has lost a chunk of its longevity.
 

topcat001

macrumors 6502
Nov 17, 2019
286
140
Since it is Apple, we can always go to a store and get it replaced rather than deal with some shady repair shop. I use my friend’s old iPhone X and he really killed the battery. It was trivial to replace through Apple and now works absolutely fine.

I use a wired charger and keep it between 60-80 % unless I’m going to be away from a charger all day.
 
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Alex Cai

macrumors 6502
Jun 21, 2021
422
380
the heat kills the battery
don’t use a mfm labeled charger because it charges at 15w which generates more heat. a magnetic (not made for MagSafe) charger would be a lot better
 
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koelsh

macrumors 6502
Oct 26, 2021
272
399
Personally I've found more variability from battery to battery than trying to manage it manually is going to account for so I try not to think about it much. The 5 year old battery in my refurbished Series 3 Apple Watch has been through the wringer and still lasts 2 days and reports 95% health. Had a friend who's large iPhone bought at the same time dropped to 85% life in a year.

Here's what I go by.
Yes excessive heat is bad however MagSafe just makes it warm so it's fine.
Avoid discharging all the way.
Avoid leaving at 100%.

My iPhone 8 from 2018 traded in a couple months ago was treated this way and it had 88% life remaining.

I would however recommend using MagSafe compatible (plugged into whatever wattage charger you want) over a generic Qi/magnetic charger as MagSafe compatible aligns the coils while others just hang out wherever. My iPhone 13 gets slightly warm on MagSafe with 15 watts verses getting alarmingly hot on the 2 generic 5 and 10 watt Qi chargers I've tried so far.
 
Last edited:

Reggaenald

Suspended
Sep 26, 2021
864
798
No.
It itself doesn’t, but the inevitable heat as a byproduct can cause the “chemicals to age faster”
 

Reggaenald

Suspended
Sep 26, 2021
864
798
Since it is Apple, we can always go to a store and get it replaced rather than deal with some shady repair shop. I use my friend’s old iPhone X and he really killed the battery. It was trivial to replace through Apple and now works absolutely fine.

I use a wired charger and keep it between 60-80 % unless I’m going to be away from a charger all day.
No need to be that gentle
 

Lounge vibes 05

macrumors 68040
May 30, 2016
3,810
11,013
Like everyone else is saying here, just charge the phone.
Batteries can be unpredictable, I used an iPhone 11 for over a year with a wireless charger and it never dropped below 95%. I wasn’t doing any special management. I just charged the phone at night, picked it up in the morning and had to charge it a couple times outside of that obviously, but still it never dropped below 95%.
I had a 12 mini for a year, and by the end of the year, it was already down to almost 80%. Using the exact same equipment as the 11 to charge.
There are also several other factors as well, almost all having to do with heat.
Do you work in an environment where your phone is going to be getting hot, for example, working outdoors during the summer?
Do you leave your phone in the car while it’s hot outside?
Do you keep the room that you charge your phone and cool?
pretty much anything regarding the temperature can make a change.
 

Alex Cai

macrumors 6502
Jun 21, 2021
422
380
I would however recommend using MagSafe (plugged into whatever wattage charger you want) over a generic Qi/magnetic charger as MagSafe aligns the coils while others just hang out wherever. My iPhone 13 gets slightly warm on MagSafe with 15 watts verses getting alarmingly hot on the 2 generic 5 and 10 watt Qi chargers I've tried so far.
A magnetic charger will do better than the MagSafe charger. (I have the MagSafe charger from apple and one from Anker)
 

blkjedi954

macrumors 6502
Feb 15, 2012
407
314
Florida
“Harming” the battery is actually on a sliding scale. The least “harm” that can be done to a battery is to keep it at 40% charge and not use it. Everything beyond that is more harmful.The bigger the depth of discharge, the more harmful. The higher it is charged, the more it harms the battery.
Using a lithium ion battery is a matter of being realistic with its use. Want a battery to last a reasonable length of time? You’re going to ‘harm’ it by charging it up.
Want a battery that doesn’t take ages to charge? You’re going to harm it a bit charging it faster than slower.
At some point, you've got to control the battery and not let it control you.
Just charge up the sucker with any method Apple recommends and forget about it.
Thank you for that non solution. It really adds finality to the poster’s quest. Mad Hatter vibes..🥸
 

Apple_Robert

Contributor
Sep 21, 2012
35,410
51,923
In the middle of several books.
If the battery gets bad before 2 years is over, have Apple replace it. I think too many people around here obsess about their batteries.

Create a shortcut with a smart kit compatible plug whereby the charger shuts off after the battery gets charged. Problem solved.
 
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tomekwsrod

macrumors regular
Apr 16, 2018
124
121
I wouldn't worry about it and if you don't, Apple will replace the battery relatively cheap so it really doesn't matter. Just use your device and charge it when you need too.
I would just add that it matters for the environment we live in.
 

Jack Neill

macrumors 68020
Sep 13, 2015
2,272
2,308
San Antonio Texas
My XS has about 750 cycles on it and 85% health and is 4 years old. I used a Samsung qi charger for almost its entire life and I had no problems with the battery.
 

koelsh

macrumors 6502
Oct 26, 2021
272
399
A magnetic charger will do better than the MagSafe charger. (I have the MagSafe charger from apple and one from Anker)
Quick question, is this magnetic charger from Anker one that's "MagSafe compatible"/uses the magnetic rings?
 

Isamilis

macrumors 68020
Apr 3, 2012
2,162
1,062
This is the answer. Just use your phone. Don't abandon convenience because of inevitable battery degradation. The battery is going to degrade, you can't stop it. But it will be several years before that degradation even becomes noticeable in every day use. And at that point, you probably should be trading up to a newer phone. And if you don't, you can replace the battery.
> getting a new battery is accessible to me if I need
This is it. Some countries are unable to get battery replacement.
 

koelsh

macrumors 6502
Oct 26, 2021
272
399
A magnetic charger will do better than the MagSafe charger. (I have the MagSafe charger from apple and one from Anker)
I see what you're saying and I should have said "MagSafe compatible" as opposed to MagSafe brand. Modified my first reply to reflect this.

Aligning the coils is the way to go and I'm a little surprised the standard allows for free positioning anyway considering all the other problems they have to overcome anyway.
 
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