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Apple Support
support.apple.com › guide › iphone › power-adapters-iph8c1e31583 › ios
Power adapters for iPhone - Apple Support
Note: For fast charging, iPhone 12, iPhone SE (3rd generation), and later models require a power adapter with a minimum power output of 20 watts, such as the Apple 20W USB power adapter.
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Apple Support
support.apple.com › en-us › 102574
Fast charge your iPhone - Apple Support
* You need a 20W or higher power adapter to fast charge your iPhone 12 and later.
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MacRumors
forums.macrumors.com › iphone, ipad, and ipod touch › iphone › iphone
highest Watt charger that an iPhone 12 will take advantage of? | MacRumors Forums
October 26, 2020 - Yea how much time could the Apple 20w save anyway. Is it good or bad for the battery to use and 18w or 20w more than once a day. ... As advertised, the Apple 20 watt fast charger will charge from 0% to 50% in 30 minutes.
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Quora
quora.com › Can-the-iPhone-12-use-a-30W-USB-C-Power-Adapter-and-how-fast-will-it-charge-compared-to-the-5W
Can the iPhone 12 use a 30W USB-C Power Adapter, and how fast will it charge compared to the 5W? - Quora
Answer (1 of 4): Yes. Do note that the iPhone maxes out at 20W charging. It is however safe to use a 30W charger, as the right configuration is automatically set by the charger and the chips inside the charger and phone.
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Reddit
reddit.com › r/iphone12pro › iphone 12 pro and 30 watt usb-c charger
r/iPhone12Pro on Reddit: iPhone 12 Pro and 30 watt USB-C Charger
December 14, 2020 -

I am in awe about how fast my phone charges with the iPhone branded 30-watt USB-C charger. The 30- watt charging block is a pretty penny but worth every dime. I can also charge my iPhone 6 and iPhone X with the USB-C charger and get surprising results. This charger can charge my phone from 20% to 67% in 12 minutes. Of I was using my phone while it sets, the results are quite the same! While the USB-C cord comes with the new iPhone 12’s, you will have to buy a charger block for the wall. The iPhone 12 pro can tolerate the highest wattage charging block on this phone of 96 watts USB-C charger block, but it costs a pretty penny. I wonder if anyone has been as impressed as I am about the charging speed on these phones. I suggest that anyone that buys a charger get these chargers!

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YouTube
youtube.com › watch
iPhone 12 Pro Charge Test: 5W vs 20W (Apple) - YouTube
Twitter: https://twitter.com/UltimateiDeviceInstagram: https://www.instagram.com/ultimateidevicevids/Facebook: https://www.facebook.com/pages/UltimateiDevice...
Published   December 14, 2020
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PhoneArena
phonearena.com › home › news
Apple iPhone 12/Pro 18W vs 20W vs 5W vs MagSafe adapter charging speeds - PhoneArena
July 6, 2021 - Moreover, if you need your new ... up your iPhone 12 models at its peak 15W power that Apple promises, that can only be achieved with the fresh 20W brick. Not even Apple's 96W MacBook charger will ensure the optimum charging speeds with MagSafe, ...
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PITAKA
ipitaka.com › blogs › news › the-apple-20w-fast-charger-does-it-charge-your-iphone-any-faster
Is a 20W Charger Fast? iPhone Charging Speeds Compared – PITAKA
Assuming the iPhone 12 has a similar battery size as iPhone 11 and adopts the same fast charging technology, the 20W fast charger will be able to charge up to 50% in 30 minutes, and up to 100% in 2 hours and 8 minutes or so.
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EMINENCE-TOP
eminence-top.com › home › different original apple chargers full charged iphone12 test (from0~100%)
Different Original Apple Chargers Full Charged iPhone12 Test (from0~100%) - EMINENCE-TOP
November 5, 2020 - Used Apple’s 18W charger to charge the iPhone 12. After a short period of power-off and charging, the phone was turned on, and then the voltage jumped from 5V to 9V fast charging.
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Top answer
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Let's clear some things up:

  • Wireless Charging refers to the Qi wireless charging standard that allows you to charge your phone without directly plugging it in. You place it on a charging pad, or in the case of the new iPhone 12, the MagSafe charger will magnetically align it for you. You have to plug the base (transmitter) into the wall - it can't obtain power from thin air.

  • USB-C charging conforms to the USB-C Power Delivery spec in which it negotiates higher charging rates. To get those higher rates, you need a USB-C charger rated to at least 20W. You can use a higher one with no problem. If you use a lower rated one (i.e. the 5W charger) but, you won't get the faster charging speeds; it may not even charge at all.

  • The "regular" USB type A charger (that everyone has) can typically supply up to 12 watts of power. You can use a charger that supplies more, but the phone will not draw any more than 12 watts. Again, I recommend, using chargers with higher wattage ratings.

  • Anker PowerIQ is Anker's technology that identifies what it's connected to so that it can deliver the maximum charge to the device connected. The first generation of PowerIQ delivered up to 12W and PowerIQ 2.0 can deliver up to 18W. These really have nothing to do with Apple's products per se other than they are compatible.

TL;DR

The charger (the thing that plugs into the wall) is required; period. Regardless if it's USB-A or USB-C, you can always use a "larger" charger than what is called for, in fact, I recommend it. A USB-A charger will typically max out at 12W (5V @ 2.4A). A USB-C charger will go up to 20W.

If you go wireless, you still need a charger (USB-C) and the maximum you'll get is 15W using MagSafe and only half that (7.5W) using a regular Qi charger. No matter what, you still need to plug the Qi base into the wall and the sizing rules still apply - get an adapter "larger" than what you need (i.e. get at least 20W). You can use a USB-C MacBook charger rated at 91W with no problems whatsoever. The 5W charger that came in the iPhone SE box will not cut it.

You can use either the new USB-C charger with Power Delivery or your can use the older USB (type A) chargers that supply 5V at 2.4 Amps

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PITAKA
ipitaka.com › blogs › news › everything-you-need-to-know-about-fast-charging-your-iphone
Everything You Need to Know About iPhone Fast Charging – PITAKA
Instead of the old charging standard (5W) and APPLE 2.4A charging protocol (12W), iPhone has adopted the USB Power Delivery fast charging protocol, which enables charging three times faster than the old 5W standard.
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CNN
cnn.com › electronics › smartphones & tablets
Best iPhone 12 chargers | CNN Underscored
October 28, 2020 - At just $19, Apple’s 20-watt USB-C plug is one of the most affordable products from the company. In fact, it replaces the $29 18-watt charger while adding a bit more speed. It’s billed as the fast-charging accessory to pair with your iPhone ...
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Tom's Guide
tomsguide.com › phones › iphones
iPhone 12 chargers tested: 5W vs MagSafe vs 20W | Tom's Guide
October 28, 2020 - Here's how much faster the iPhone 12's new 20W and MagSafe chargers are compared to your dusty old 5W brick.
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MacRumors
forums.macrumors.com › iphone, ipad, and ipod touch › iphone › iphone
iPhone 12 Requires a 20 Watt Charger for FAST CHARGING; Does an 85 Watt Charger Charge Faster? | MacRumors Forums
November 28, 2020 - Here are my own personal numbers. fast charge using 87 watt macbook charger for iphone 12 pro max 15 minutes - 30% 30 minutes - 59% 45 minutes - 78% 1 hour - 88% 1 hour 15 - 93% 1 hour 30 - 96% 1 hour 45 - 98% 2 hours - 100% similar numbers ...
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ScreenRant
screenrant.com › home › tech › tech features › iphone 12 fast charge & wireless charging: what you need to know
iPhone 12 Fast Charge & Wireless Charging: What You Need To Know
October 22, 2020 - If debating over whether to get ... Lightning cable, fast charging works with Apple USB-C chargers that supply from 18-watts through 96-watts....
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Reddit
reddit.com › r/iphone12 › charger wattage for 12 pro max?
r/iPhone12 on Reddit: Charger Wattage for 12 Pro Max?
April 28, 2021 -

Hi guys, I just switched over to a 12 Pro Max a few days ago from an XS Max & I’m wondering which Powder Adapter do y’all use/recommend?

I’ve been using a 30w USB-C adapter on my XS Max & noted nothing of it & managed to be at 88% Battery Health after 2.5 years.

But I’ve noticed that my 12 Pro Max heats up when using it so I’ve switched over to a 12w USB-A adapter.

Is this a problem that people are facing as well?

P/s I’m on IOS 14.5, not sure if this is a point of concern so I figured I’ll just mention it.

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9to5Mac
9to5mac.com › 2021 › 04 › 02 › what-can-i-use-to-charge-iphone-12
What can I use to charge iPhone 12 - 9to5Mac
April 2, 2021 - Using USB-C, you can charge the iPhone to 50% in about half an hour. The highest wattage the iPhone 12 will use is around 22 watts, so a 20 watt or 30 watt charger will result in the about same charging speed.
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Reddit
reddit.com › r/iphone › is there anyone willing to explain fast charging to me simply?
r/iphone on Reddit: Is there anyone willing to explain fast charging to me simply?
July 5, 2023 -

Hello guys I am coming from android and on my Samsung I'm used to superfast charging. As far as I can see there is nothing like that on iPhone but impact it charges my phone equally as fast as Samsung is being charged. I'm trying to buy an external charger and I see there are lots of them mentioning 18 W 25 W 20 W so I'm a little bit confused

I remember someone mentioning that when you charge your phone there is a certain amount of energy that it could take let's say it is locked on 25 W The more you charge the slower it gets so maybe the charger goes back to 18 W I don't really know I'm just guessing

So really are these external chargers or chargers in general those who go to 18 to 25 or they are locked on their respective values which are written for example 18 25 Currently I'm using third-party charger and it is charging my phone very very well I'm using iPhone 11 and it says it is 20 W Does that mean that I could be charging my phone faster on some charger that is offering 25W

Thank you

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iPhone 11 supports up to an 18-watt charger, which gives you a 50% charge in 30 minutes. Any higher watt charger is overkill and won’t charge any faster. It won’t harm either, because the iPhone will only draw what it is supposed to. There are apps that calculate, fairly accurately, the amount of wattage your phone is drawing from a charger. Or you could get a Lightning to USB-C cable that displays the current wattage.
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This is just a breakdown about how fast the iPhone charges when using the maximum wattage adapter. I’ve personally tested this at work with both an Apple 29 watt and a 61 watt USB C power brick. All iPhone models from the iPhone 2G to the iPhone 5S and the iPhone SE (2016) support a maximum of 5 watt charge. The standard iPhone 6/6S/7 and the respective Plus models all support a maximum of 12 watt fast charging when using the iPad 12 watt adapter or with a USB C power brick that supports or exceeds 12 watts. The iPhone 8/SE 2020 supports 12 watt fast charging. Prior to iOS 13, it used to support 15 watt fast charge, but only for the iPhone 8. The iPhone 8 Plus, iPhone X, XS, XS Max and XR supports 15 watt fast charge. The iPhone 11, 11 Pro and 11 Pro Max supports 22.5 watt fast charge. The 11 Pro Max however can support up to 25 watt fast charge if you use the Apple 29 watt USB C Power brick. The iPhone 12 and 13 Mini supports 15 watt fast charge. The iPhone 12, 12 Pro, 12 Pro Max, iPhone 13 and 14 (6.1 inch screen model) all support 22.5 watt fast charge. The iPhone 13 Pro, iPhone 14 Pro and the 14 Plus supports 25 watt fast charge. The iPhone 13 Pro Max and the 14 Pro Max supports 27 watt fast charge (or 29 watts maximum if you use the Apple 29 Watt USB C Charging brick)