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maverick22

macrumors 6502a
Original poster
Sep 30, 2012
685
107
I’m trying to decide if I should get the faster charging setup. I did that and loved it with the 12 PM but just recently found out that the faster charging degrades the battery life quicker.

So which would you all say is better for daily charging a 15 PM: using a fast charging method for about an hour OR use slow charging overnight?

Thanks in advance!
 

maverick22

macrumors 6502a
Original poster
Sep 30, 2012
685
107
Either method is going to be better than what I did with my 14PM, which was using a fast charger all night! Definitely degraded the phone's battery life.
That’s exactly what I did! I didn’t know it would degrade the battery, but it sure did on my 12 Pm. I was in the red by about 4:00 pm.
 

now i see it

macrumors G4
Jan 2, 2002
10,820
22,832
15PM charges at a max 27 watts up to about 75% or so then starts to taper down the current as the charge level gets higher. It can’t charge fast above about 80%.

A good rule of thumb to judge a charger is how hot the phone gets while charging. If it seems too hot while charging - use a smaller charger. Apple recommends their 20 watt charger.
 

JRoDDz

macrumors 68000
Jul 2, 2009
1,927
183
NYC
It really doesn’t matter much. The phone controls the charge rate up to the max on the charger. It can slow down the charge when needed (above 80%).
 
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reppans

macrumors 6502
Dec 2, 2006
316
187
Slow 5W charger plugged into a dumb light timer set to commence charging ~5am every morning, and use the new 80% peak charge limiter if you have the excess capacity. Better yet, use a shortcut automation with smartplug for a truly custom charge optimization.
 

sack_peak

Suspended
Sep 3, 2023
1,020
958
OCD charging

20-80% charge rule using a 5W slow USB-A charger that both are actively liquid-cooled.

Will take about 5 hours to complete but if you never play games on your iPhone then you can expect high 90s percent charge by year 9.

Of course you'll be that guy with a decade old iPhone when 9 of 10 people around you have a phone half that age.
 
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JPack

macrumors G5
Mar 27, 2017
12,851
24,308
OCD charging

20-80% charge rule using a 5W slow USB-A charger that both are actively liquid-cooled.

Will take about 5 hours to complete but if you never play games on your iPhone then you can expect high 90s percent charge by year 9.

Of course you'll be that guy with a decade old iPhone when 9 of 10 people around you have a phone half that age.

Huawei sells a case for the Mate 60 with a micro pump and liquid cooler powered by reverse charging. Maybe Apple will do the same? :D And copy the satellite voice calling and SMS feature while they’re at it.


1696182307231.jpeg
 

sack_peak

Suspended
Sep 3, 2023
1,020
958
Hmmm that’s a good idea about the 0-50% in the car.
The car is the only place I could think of to 30W USB-C fast charge as there are instances where we forget the charge the night before or need a top up at the end of the day before a night out in the town.

Typical driving time is about 50 mins?
 

MarkNewton2023

macrumors 6502a
Sep 17, 2023
604
602
I’m trying to decide if I should get the faster charging setup. I did that and loved it with the 12 PM but just recently found out that the faster charging degrades the battery life quicker.

So which would you all say is better for daily charging a 15 PM: using a fast charging method for about an hour OR use slow charging overnight?

Thanks in advance!
It depends on the your phone use. Do not overthink it, If you are using your phone quite a lot during the day and during half of your day, your phone battery is almost out, fast charging is needed to ensure you can use your phone again before the day ends. If you do not use your phone frequently and the phone battery is not out by the end of the day, charge it overnight. 😊
 

Andeddu

macrumors 68000
Dec 21, 2016
1,669
2,063
It doesn’t matter. I slow charged my iPhone 6S with a 5w Apple charger for 2 years and it ended up with 84% battery health.

You will need to replace your battery around the 2 year mark no matter how you choose to charge, whether fast, slow or wireless, it makes no difference in the long run.
 

sack_peak

Suspended
Sep 3, 2023
1,020
958
It doesn’t matter. I slow charged my iPhone 6S with a 5w Apple charger for 2 years and it ended up with 84% battery health.

You will need to replace your battery around the 2 year mark no matter how you choose to charge, whether fast, slow or wireless, it makes no difference in the long run.
My 2yo 13 Pro Max turned 97% over a week ago?
 

thecautioners

macrumors 6502a
Dec 5, 2022
534
1,251
I fast charged my 14PM nightly with a Belkin MagSafe charger. Left it on the charger all night. Battery was at 94% after a year. I’m doing the same with my 15PM, I’m not super concerned about battery longevity as I want to upgrade every year.
 

ToddH

macrumors 68030
Jul 5, 2010
2,654
5,287
Central Tx
Why not go to Walmart and buy the Anker 20k power sense II power bank ($60) and carry it with you and use it to randomly charge your iPhone for 30 minutes here and there? No need to leave it plugged in overnight & it charges the iPhone fairly quickly, 15-18W. I have several of them, they are fantastic and using them to charge your iPhone randomly throughout the day really keeps your battery healthy longer. My 14 pro max is at 100% health after a full year of charging it like this. Just an idea….
 
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reppans

macrumors 6502
Dec 2, 2006
316
187
…You will need to replace your battery around the 2 year mark no matter how you choose to charge, whether fast, slow or wireless, it makes no difference in the long run.

Battery hobbyist running an automated custom charge optimization (shortcut/smartplug as mentioned above). Here’s my XR after 4years of consistent use.

Do you charge it every single night from 10% to 100%?
Major caveat excluded from your original statement - most folks don’t need their full batt capacity on a daily basis. Anyone using less than 70% capacity/day (from 1 plug-in) can significantly extend their batt life with good charge practices, and fully automated so no hassle/tending/worry after one-time setup.

Now my normal usage is admittedly unusually efficient (mostly wifi and lite apps) but it was also quite easy to go through the settings and turn-off a bunch of useless-to-me ‘features’ to free-up a lot more batt capacity too - I’ve always gotten Apple ‘upto’ SOT spec on a new phone. With new phones spec’ing 20-30hrs, I assume there’s plenty of excess capacity to be found without much sacrifice. Least Apple gives you the tools to choose between features <> batt runtime/service lives….. or batt swaps.

FWIW, slow charging helps some, but the big one and easiest to control is minimizing time spent at high SoC.
 

1rottenapple

macrumors 601
Apr 21, 2004
4,712
2,725
I just did a battery swap on on a iPhone 2020 se and also bought new sealant to replace the gasket. It was surprisingly easy. I wonder how the iPhone mini battery replacement is like. It its easy I can force just changing the battery yearly. Supplies were $20. I had existing iPhone tools to open it.
 

Infinitewisdom

macrumors 6502a
Sep 23, 2012
782
573
Battery hobbyist running an automated custom charge optimization (shortcut/smartplug as mentioned above). Here’s my XR after 4years of consistent use.


Major caveat excluded from your original statement - most folks don’t need their full batt capacity on a daily basis. Anyone using less than 70% capacity/day (from 1 plug-in) can significantly extend their batt life with good charge practices, and fully automated so no hassle/tending/worry after one-time setup.

Now my normal usage is admittedly unusually efficient (mostly wifi and lite apps) but it was also quite easy to go through the settings and turn-off a bunch of useless-to-me ‘features’ to free-up a lot more batt capacity too - I’ve always gotten Apple ‘upto’ SOT spec on a new phone. With new phones spec’ing 20-30hrs, I assume there’s plenty of excess capacity to be found without much sacrifice. Least Apple gives you the tools to choose between features <> batt runtime/service lives….. or batt swaps.

FWIW, slow charging helps some, but the big one and easiest to control is minimizing time spent at high SoC.

Since you're a self-proclaimed battery hobbyist, I have two questions for you, haha:

Is there a definitive answer on whether MagSafe vs wired charging - at the exact same wattage - makes any difference for battery longevity? The concern would be the heat generated from wireless charging, right?

Now that there are power banks with MagSafe, is it fair to say that a 10,000mah power bank using MagSafe charging will not be able to charge an iPhone as much as a 10,000mah power bank that charges via a cable?

Do not feel obligated to answer! But I thought I'd ask.
 

sack_peak

Suspended
Sep 3, 2023
1,020
958
Since you're a self-proclaimed battery hobbyist, I have two questions for you, haha:

Is there a definitive answer on whether MagSafe vs wired charging - at the exact same wattage - makes any difference for battery longevity? The concern would be the heat generated from wireless charging, right?

Now that there are power banks with MagSafe, is it fair to say that a 10,000mah power bank using MagSafe charging will not be able to charge an iPhone as much as a 10,000mah power bank that charges via a cable?

Do not feel obligated to answer! But I thought I'd ask.
My 2cents... wireless charging consumes more power & produces more waste heat.

Having a 2nd option to charge is always nice especially when no cables are available.
 
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