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They can charge fast, but not transfer fast? So why design a USB 2.0 that can charge fadt when when there is 3.0? Asking for a friend.

(I think it’s 3.0 but they are limiting transfers to stop external storage use)
Charging fast while also being able to transfer data quickly usually means the cable needs to be thicker. Fun fact: USB-C spec requires at least USB 2.0 transfer speed but most people seem to assume C = 3.0
 
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I use that Belkin 3-in-1 wireless charger with MagSafe... Best charger ever!
Totally agree. Bought the same charger today and it works very well. Looks great, charges 3 devices at a time and I was able to get it at BestBuy for $119 since they were marked wrong. Still pricey, but Belkin makes a good product.
 
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That’s very informative and interesting. Is it weird that I continue to use original 5W Apple’s charging adapter to charge my new iPhone 14 Pro Max?

I’m still using the same 5W brick from my XS Max to charge my 14 Pro Max and I have a 45W brick from Mophie and a 30w brick from Verizon, that I have yet to use. I don’t find still using a 5W brick overnight weird at all.
 
Don't limit your search to studies specific to iPhone batteries - it's well-established of all lithium-ion batteries. Lots of research papers and articles are behind academic paywalls, but here's one: https://www.frontiersin.org/articles/10.3389/fenrg.2022.905710/full which also includes a raft of references which cover the same area of research.

Hi, thanks. Yeah I had seen the generic ones, but wasn't sure if it still held with Apple's implementation of charging etc. :)
 


Chinese website Chongdiantou has tested a variety of Apple power adapters with the iPhone 14 and the iPhone 14 Pro Max, providing useful data about charging speeds and revealing which charger is the most valuable for fast charging.

iphone-14-lineup.jpg

The short answer is to choose Apple's 30W USB-C power adapter, which at $39 is the company's lowest-priced charger that can charge the iPhone 14 and iPhone 14 Pro Max at their maximum supported charging speeds of 25W and 27W, respectively. All other higher-priced Apple chargers, such as the new 35W adapter with dual USB-C ports for $59, charge the devices at equal to negligibly faster speeds at best.

The chart below is in Chinese, but it shows that all 29W or higher Apple adapters charged the iPhone 14 Pro Max at 26W to nearly 27W.

Chongdiantou-iPhone-14-Pro-Max-Charging-Speeds.png

While charging speeds for the iPhone 14 Plus and iPhone 14 Pro remain to be seen, the 30W adapter should be the best choice for those devices too.

Interestingly, Chongdiantou found that the iPhone 14 Pro Max can briefly achieve peak charging speeds of nearly 29W with Apple's older 29W power adapter, which was designed for the 12-inch MacBook and discontinued in June 2018.

By comparison, the iPhone 13 and iPhone 13 Pro Max are capable of up to 23W and 27W charging speeds, respectively, according to Chongdiantou's sister website ChargerLAB, so Lightning charging speeds for all iPhone 14 models are largely the same this year ahead of Apple's expected switch to USB-C for iPhone 15 models next year.

Apple no longer includes a charger in the box with any iPhones. For all four iPhone 14 models, the company says users can charge the devices to 50% in around 30 to 35 minutes with a supported 20W or higher power adapter.

Update: Chongdiantou sister website ChargerLAB has shared a video of its iPhone 14 Pro Max charging speed test.



Article Link: iPhone 14 and iPhone 14 Pro Max Charging Speeds Tested: Here's What to Know




Well, using apple OE USb-C / Lightning cable and ESR 60W charger , was able to charge iP 14 Pro Max on iOS 16.1 beta 3 .... wait for it 8.245 A / 41.22 W , phone battery went from 40 % to 50 % very fast. was little bit concerned about heating up the battery so i stopped it and have a screen shot of of Amperes 4 app charging history.
shortly after i used the same cable along with apple 20W charger , 19.58 W/ 3.916 A .
till 80% that is when i went back to the 60 W charger , found it at 7.91W / 1.582 A , then after 90% on the battery 6.52 W / 1.305 A.
 
5W to 15W to 20W to 30W power adapters. Apple is surely saving the environment and charging back to every customer who buys these adapters separately even after spending $799 - $999+USD (or $1,099+ CDN) for their phones. Total insanity. :(
You don’t have to buy a new one. The old ones work just fine. That’s the power of USB.

It’s wasteful to include a bulky adapter if you already own one you like.
 
5W charger for overnight
30W car charger when I need 0-50% charging within 30 min drive.
 
I’ll into looked into this in the past and stuck with 5w Apple cube for overnight charging and fast charging when I need it throughout the day in the car or before leaving home. I’ll try to unplug before battery level goes higher than 80% since charging rate slows down anyway.

I end up trading in for a new phone every 1-2 years anyway.

..name of the game is to avoid getting the phone hot if you want to prolong battery life.
 
maximum supported charging speeds of 25W and 27W,
Do you have a citation for those 25W and 27W claims?

Because Apple's official speficaions pages make no such claims. (The headings in the table below link to the relevant Apple specs pages):

Power and Battery​

  • MagSafe wireless charging up to 15W
  • Qi wireless charging up to 7.5W
  • Fast-charge capable: Up to 50% charge in around 30 minutes with 20W adapter or higher (available separately)

Power and Battery​

  • MagSafe wireless charging up to 15W
  • Qi wireless charging up to 7.5W
  • Fast-charge capable: Up to 50% charge in around 30 minutes with 20W adapter or higher (available separately)

Power and Battery​

  • MagSafe wireless charging up to 15W
  • Qi wireless charging up to 7.5W
  • Fast-charge capable: Up to 50% charge in around 30 minutes with 20W adapter or higher (available separately)

Power and Battery​

  • MagSafe wireless charging up to 15W
  • Qi wireless charging up to 7.5W
  • Fast-charge capable: Up to 50% charge in 35 minutes with 20W adapter or higher (available separately)
 
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