iPhone 15 Pro Max Are you limiting your iPhone 15 Pro battery to 80%?

[Jackbequickly]

Using the 80% option is just that, an option! If you do not want to use it, Apple give you a choice.

Always good to have choices!

 

[spiderman0616]

And neither were we.

this is just one tool to help us manage our phones and it fits some people‘s needs and not others.

Right. But isn't this thread to discuss whether or not you use it? It's assumed some of us will use it and some won't, but I thought we were here to discuss why/why not. Am I wrong here? Are we not in the trust tree?

 

[kristof461]

I am wondering if iPhone learns about charging behaviors when we use 80% limit. If I know apple well I don't think so but it should. Some people can use 80% limit but when they want to charge their iPhones to 100% they should be able to switch smoothly between this option and optimized charging.

 

[Grobaouche]

I use 80% limit since I unpacked my iPhone 15 Pro.

Since many years I have managed to keep 100% battery health on my iPhones by doing the following :
- Never charge upper than 80% and lower than 40% : many studies showed that by doing so you limit the stress on the battery, and slow the degradations of its cells
- Limit the battery cycles : plug your phone when you are using it when possible
- Limit the use of wireless charging: it makes the battery goes hotter and batteries do not like heat.

So the 80% setting is a blessing in that sense I do not have to manually check when I arrive at 80% charging.
And It works, I change iPhone every year and since 4 years doing this I have 100% battery health after one year of use.

 

[dan428]

I turned it off again because I realized how silly it is. Why shouldn’t I use the longevity of my brand new iPhone 15 Plus battery to its fullest. Using it only between 80 % and 30 % is basically like using an iPhone that only has battery health of 80 % remaining after x years in the first place.

I no longer fast charge (unless I am on vacation) though! Also no more wireless charging. Too much heat. I think that’s what killed my 12 PM battery, not charging it to 100

Not using fast charging or wireless seems like a lot bigger inconvenience to me than having it limited to 80%.

Unfortunately for me the feature never works anyway so I just take it off before it’s charged and don’t plug in at night

 

[dan428]

It’s like when people put a screen protector on the iPhone screen to protect it from scratches and then never replace it, even after looking like a bomb exploded it on. So instead they are looking at a screen with bubbles, dust particles and scratches for 2+ years 😅

It’s nothing like this, I use the feature and personally hate screen protectors and always have, never had any desire to use them. You people saying this sht are being deliberately obtuse. People have really explained their reasoning repeatedly in this thread.

 

[spiderman0616]

It’s nothing like this, I use the feature and personally hate screen protectors and always have, never had any desire to use them. You people saying this sht are being deliberately obtuse. People have really explained their reasoning repeatedly in this thread.

OP did you only want people replying if they DO use it? I had no idea this topic made people so angry.

Nobody is being deliberately obtuse. Dumb analogy or not, you can’t get mad at people for talking about the the thing the thread is asking them to talk about.

Everyone needs to chill. It’s a cell phone.

 

[iwan073]

Why on earth would I keep it at 80%?

I prefer to have lost 3% of my battery performance... after 2 years, over losing 20% battery charge... every day.

 

[iYigit]

I'm using it right now since my iPhone 15 pro max is brand new but guess I'll just turn it off later. Positive effect on the battery is alright, but is it really worth it? that's the real question here. Regardless of this, people, enjoy your iPhones!

 

[christlinah]

(...)but is it really worth it? that's the real question here.

Especially since it's not even proven that it actually makes any significant difference in the long run but purely anecdotal / theoretical. But Apple implemented the function for those who are concerned about it so to each their own.

 

[reppans]

Especially since it's not even proven that it actually makes any significant difference in the long run but purely anecdotal / theoretical.

Plenty of credible/corroborating scientific battery research/lab testing out there - some examples: ONE, TWO, and my favorite THREE as this one addresses the easy low hanging fruit, and tests the low low SoC range. Anecdotally, it’s working well for my 4yo phone after ~700cycles/10,000hrs SOT, but to be fair my usage pattern is unusually efficient (w/ lite apps, wifi, settings).

Apple’s ‘optimization’ and 80% peak limiter are dumbed-down so unfortunately misses the easy ‘low hanging fruit’, but they are better than nothing. It’s not hard to program an automated custom charge optimization (w/ smartplugs, shortcuts, Chargie usb dongles, and even dumb light timers), but of course takes a one-time initial investment to learn and implement. For me, it’s less time/cost/hassle than an Apple Store battery swap. I have plenty of reserve capacity/SOT, so need only plug-in once/day and forget about it (no hassle/tending if automated). Phone lasts me all day, and IME should easily outlast Apple’s iOS support. YMMV of course.

 

[rkuo]

Especially since it's not even proven that it actually makes any significant difference in the long run but purely anecdotal / theoretical. But Apple implemented the function for those who are concerned about it so to each their own.

You actually believe Apple just invented this limit and the reasons people might use it out of thin air?

 

[BugeyeSTI]

Then you’ve got better powers of persuasion as the AppleCare guidelines basically say it has to be below 80%. Even if you’re paying out of pocket they still won’t replace the battery unless their diagnostic app says below 80%.

It’s BS as I’ve had the same situation where the battery is supposedly in the low 80% health range, but the battery craps out after just a couple of hours. Their app isn’t very accurate as it only takes into account total capacity but doesn’t account for the much higher internal resistance of worn out lithium Batteries that significantly reduces capacity with high drain usage.

I've had the battery replaced in a 6S and X at 85% and 82% respectively... They informed me the percentage wasn't at the 80% threshold and I explained I was aware and wanted to pay out of pocket regardless of the reading. Each time the battery was replaced in just over an hour. The Apple store is located in Scottsdale Az..

 

[dominiongamma]

If you are planning to have your phone beyond 2 years this feature will be useful to preserving the battery’s life but if you upgrading yearly or at the two year mark then it wouldn’t benifit the user very much.

I live in Phoenix. AZ where the heat is much harder on the iPhone battery’s here so I will probably use the 80% feature. I think this is the first year I won’t want to upgrade in 3 years at least as well, because the features and all that have got so small that the need for upgrading while price goes up is getting harder to justify

 

[JPack]

Why on earth would I keep it at 80%?

I prefer to have lost 3% of my battery performance... after 2 years, over losing 20% battery charge... every day.

I prefer to lose 0% after 2 years, but that ain’t happening. Neither is 3%.

 

[RobertSeattleWA77]

Nah, I'm living life on the edge at 100%! Upgrading every year won't hurt

 

[marioman38]

I have turned it on for now, reason is I am at work and have my phone plugged into a wall/battery pack. I guess its better to have it charged to 80% unplug for a bit down to 70 or 60 and back to 80 versus discharging to 80 and back to 100 over and over. We will see, I just started this a week ago maybe.

 

[one more]

I turned it on for my new iPhone 15 as I can easily top it up when needed, but will be turning it off as needed for long days out, etc.