iPhone 15 Pro Max Better charging method: use fast charging for 1 hour or use slow charging overnight?

[reppans]

Since you're a self-proclaimed battery hobbyist...

The only thing you should take away from me as a hobbyist, is that I’ve practiced what I’ve read from credible/corroborating battery research, found that it does work, can document the results of it, including links to the credible research.

I personally have no experience with wireless charging but from what I’ve read HERE, sack_peak covered it above.

 

[Supermallet]

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.

What settings do you disable? And what do you do to minimize time spent in high SoC?

 

[reppans]

What settings do you disable? And what do you do to minimize time spent in high SoC?

Too many to list, everyone has different preferences, and I don’t really know what each item consumes, so I’ll just give a few examples: GPS is off, unless I’m navigating, so Apple doesn’t use my phone as crowdsource beacon; don’t use ‘hey siri’, step-counter, or lift-to-wake so voice recognition and motion sensor need not run 24/7; shortcut to toggle cellular<>wifi while out<>home (use wifi calling at home due to weak cell signal).

Short answer is ‘charge as little as possible’ subject to 1 plug-in per day. Mentioned it in my first post, can see it in my 24hr graph, and it’s summarized @ beginning & end of that linked research paper.

 

[kaardowiq]

I mean such a device is really expensive and will probably not be replaced in a yearly cycle. Therefore, it might make sense to treat it like a princess but you should also keep in mind that you can replace the battery. After 3 years with my 11 pro I replaced the battery for 99 bucks in an Apple Store and it felt like a new device. As a result, I just use and charge it how I want - i can still replace the battery later for a low price

 

[Hakiroto]

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!

For what it's worth, my launch day iPhone 14 Pro dropped from 100% to 99% capacity about a month ago, just before I sold it. In those 11 months or so, it was charged almost only via MagSafe overnight on a Belkin wireless charger. It was used a lot with CarPlay, and for half of that time I was living in a hot country. I just want to point out that it might not be worth worrying too much about this. It's a different story if you're concerned about consuming more power, but I just don't think it's worth worrying too much about the battery health number. I see its use, but it seems to cause so much anxiety in people that I sometimes wish Apple never added it.