Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
iPhone 17 May Support Qi 2.2, Capable of Up to 25W Wireless Charging
- Thread starter MacRumors
- Start date
- Sort by reaction score
Same. I could connect a 50w MagSafe charger to my iPhone, and when I wake up, it'll be at 100%. I use a 5w Apple charger from who knows when, and when I wake up, my iPhone is at 100%.
50 Watt wireless charging is already in Chinese vehicles. The West is behind.
Handwaving the calculations a bit, but power / heat dissipation can be generalized as
I^2 * R, with R being the resistance of the coils involved.If the current
I can be kept the same at a higher voltage (as implied by the screenshot: 5-15 V with steady 3 A max), this would mean that a phone charging at, say, 15 W (5 V@3 A) would generate the same amount of heat per unit time as charging at 45 W (15 V@3 A).Energy is power over time, so if a phone charges more quickly with the same heat dissipation, it's a net win for energy efficiency.
Last edited:
This is cool for occasional use. I find these Apple magsafe chargers annoying to use over a regular Qi wireless charger because of the magnets. If you just have it sitting on a table to you have to pry the charger off instead of just lifting it off like a regular charger.
I don't understand why anyone Ould charge their phone this way and destroy their battery.
This.Free market at work. That's how it should be. Don't like what Apple does? Switch to a new phone. No need to force Apple to do anything, you vote with your wallet. See how that works?
It’s so freaking simple: let consumer wallets dictate what works/what doesn’t. Not the courts. It’s the biggest [and least talked about] opportunity in tech: preserve consumer options. Don’t litigate to a sea of sameness. Doing so, amongst many other things, leaves little incentive to innovate.
It's been almost a year and (to my knowledge) only the Apple branded charger reaches the advertised 25w. Will they open up third party 25w charging only after opening up 50w to themselves?
Will be very nice if the upcoming iPhones get faster wireless and wired charging. Hopefully this will turn out to be true.
this is good for magsafe batteries if they can support this speed. In the early 2010s, we used to carry around an extra spare batteries for our smartphone and when the battery was empty, we could pop out the empty one and put in the full one in seconds. No need to sit around waiting. With magsafe batteries, it's kind of similar in that you can snap on a battery, but the slow wattage only holds the charge instead of increasing it. 50 watt charging could actually increase the charge. I wonder if maybe they should add 2 pogo pins in the exact same spot that xiaomi added for laser link, to make that a standard feature. xiaomi laser link is magsafe with 2 pogo pins for fast data and power when a xiaomi camera is snapped on to the phone, but it could also work for fast power when a magsafe battery pack is snapped on, to avoid induction and have the energy flow directly via the pogo pins with no heat loss. Kind of like the apple smart connector merged with magsafe. It could work fast when paired with other devices but still be backwards compatible with qi2 / magsafe.
Wireless charging is getting to a level where it could be ready for something like a MacBook Air soon. It would be nice if there was a desk mat that had an integrated wireless charger. Just pickup and go...
While it sounds like a good idea, the charging wattage of 50 watts over a MagSafe connector could result in a physically very hot phone during the charging process. I'll stick to USB-IF PD 3.0 charging in the 20-30 watt range over USB Type C connector (I have plentiful USB-C chargers myself).
I, too, find that wireless charging is a good way to what the phone up which is generally bad for the battery.
I use it occasionally, but find my phone charges faster and heats less with a cable.
I use it occasionally, but find my phone charges faster and heats less with a cable.
I am just glad I am at charge how much charge my phone would use to charge (lol what a word salad). I can just take a 10 or 15w brick and use same charging pad or magsafe cable and that will do.
As a response to many comments there “why do we need wireless charging?”. Well, convenience and also it saves the port! USB-C is not a panacea and is somewhat more fragile than previous lightning, so I guess plugging it all the time can make it loose over time. Back in the days I also haven’t understood what is the point, and then realized how futuristic it looks: you just put a phone and it receives energy! No cables
As a response to many comments there “why do we need wireless charging?”. Well, convenience and also it saves the port! USB-C is not a panacea and is somewhat more fragile than previous lightning, so I guess plugging it all the time can make it loose over time. Back in the days I also haven’t understood what is the point, and then realized how futuristic it looks: you just put a phone and it receives energy! No cables
Then also do something about cooling. It’s the heat that kills batteries. The faster you charge, especially wireless, the more heat produced = the shorter your battery’s lifespan. Yet everyone ignores the issue. I’m using a $10 stand with a fan from Aliexpress, because apparently no one else cares but some random Chinese OEM.
It seems counterintuitive to me that more/faster power won’t generate more heat, but I’m no electrical expert. If the math/physics says it’s so then that’s great!
Edit- I just thought of something. Is it that the total heat remains the same? Since the charging is faster the heat dissipation lasts for a shorter period but perhaps it’s hotter for an equivalent total heat output?
Last edited:
For sure, people are different. I like to use it on a MagSafe mount/stand in my car, on my desk, and by my bed. It’s mainly useful in the first two places since I’m often getting in and out of my car and leaving and returning to my desk, so it’s just nice to be able to quickly put it down and pick it up with one hand, and have it always charging whenever it’s on the mount/stand. Anything I do many times per day I try to make easier/faster. If I’m only charging at night, then I wouldn’t mind plugging in a cable. And actually I maybe could get away with doing that with my current iPhone because of its long battery life, but I got in the habit of charging on mounts/stands from my previous phone which needed the power boosts, particularly if I was using CarPlay. But I also just like to keep battery topped up just in case, and I already have the mount/stands, so might as well.
I found one interesting lifehack for this issue. Despite my battery being quite old (so phone heats on ANY charger, unless it is 5V), the best way to have minimal heat during charging is to turn off the phone while it is charging. I don’t know how it works, but it both charges faster and doesn’t heat up as much