In Singapore Changi airport there are power outlets that lets you straight charge ur phone from the power socket or the USB port. They are safe to use

I've charged my phone in public places. No problem for me.

​@@ClaraSticks.like.figureit's unsafe. There are ways to hack the cable or power adapter and put virus in your phone

@@Sam-sddu483 unsafe? Have you seen our Changi airport? It is the world's best airport not for nothing

​@@estiennetaylor1260not yet...

The heat also causes the battery to lose it's capacity quicker. That's why I hope that these don't see wide adoption for charging phones. They only have a couple small upsides like not having to plug in a cable and possibly higher device security when charging in public (when you don't have a power only cable).

@@lolo_o4309 The advantages are generally only aids for lazy people who don't even want to connect a cable.

@@Cier433 not entirely, all ports have life spans: you can only plug and unplug so many times before the port wears out. Now type C is fairly high (around 10k vs usb a which was only 1.5k). But still, I use my phone a lot for work and am constantly re-charging it. But I use a magnetic, quick disconnect cable, with a dongle that stays plugged into my phone. This gets the benefits of a cable with the ease of disconnecting as a wireless charger.

Well that's my takeaway from this as well. Plus, call me stupid, but I don't understand how it can be called wireless charging when the charger itself must be plugged into an outlet. If we were doing away entirely with external electricity sources to charge these batteries, then I'd see an advantage. This just seems like an unnecessarily high-consumption interface for an already existing electrical system. I don't get it.

@@riohibler2345 If we take into account that the wireless charging base must be on at all times to detect when the smartphone is placed and starts charging, it only adds more waste in addition to its inefficiency in energy transmission.

Good point

A phone will never "otherwise work for 20 years" if you could more easily change the battery. That's delusional. I changed the battery in my Galaxy S7 three times over it's lifetime of 8 years. It's so slow that it takes almost 2 minutes just to open google maps now. That's the end of its life. I got a new S24 last month. Software demands on processors always increases. Features and capabilities of software and OS updates moves on. Phones will no more ever last 20 years of USABLE life than a home desktop pc will. People are so clueless about how technology actually works. They live in a fantasyland of "planned obsolescence" conspiracies and infinite product lifetime futures.

a 10year old phone cannot communicate with the internet due to old software

It's much lower than for wired charging, iFixit has a very recent video about that

I would guess around 20-30% compared to a wired charger. That is based on my experience as an electronics power designer. Of course if you're only talking about the 15W it takes to charge your phone or earbuds, it doesn't matter much. Using it to boil water in a kettle seems foolish.

@@kenmore01 The efficiency to boil water is a lot higher compared to charging a device obviously. Induction stoves are a lot more efficient as they induce most of the energy into the pan directly. The "lost" energy becomes heat which isn't a big problem when heating something. So I wouldn't say it's foolish to heat with it but it is wildly inefficient to charge a device compared to a conventional cable.

@@lolo_o4309 What you said is very true. Induction cooking is tolerable because the alternatives of burning gas or putting a pot into a coil are also inefficient with much heat lost to the air around the pot. Charging a phone by using a magnetic field is very inefficient compared to a wire connecting it directly. Back to the water heating scenario though, if I put a heating element in the water a la a deep fryer with a heating element in the oil, that's much more efficient than Eddy current heating. Comparing it to a heating element attached to a water vessel, it's probably not so bad. It's all relative. The difference is efficiency gained at 1800W is a lot more noticable than efficiency gained at 15 or even 100W.

Cords are more efficient unlike wasted electricity through wireless.

It's corporate propaganda (marketing) to sell them.

the phone and charger coils are basically a transformer when they come within close proximity of each other

My thought as well.

Wait- You're able to watch all of the decent informational videos before new ones appear? What's your secret? 😉

Qi2 doesn't solve anything that Qi1 has plagued.

The only difference in Qi2 charging is magnetic. I refuse to use since all the loyalty is going to crapple as a result.

@@estiennetaylor1260 Qi2 has many more differences, did you even bother to look or do you just love bsing?

@@paani3327 Will it be so breakthrough that consumers will upgrade? I don't think so just for magnets LOL.

@@estiennetaylor1260 come on man, you never mentioned breakthrough dude. You said Qi2 doesn’t solve anything, which is simply wrong. Also it’s not just magnets, like I said…..

Works very well through a case now, even a thick otter box. Won’t work with a pop socket or other accessory though.

Palm was indeed on the forefront. I still miss those devices.

Exactly. I hope I'm wrong, but I think it'll be a longer wait for that S-pen/Magsafe compatibility. I look for news on this regularly for the upcoming S25 Ultra and haven't heard a thing.

and cords are more energy efficient compare to wasted power through wireless.

Do you transport and make phone calls with the charging pad ?! 🤨

Thought provoking observation👍

there are several places where they are testing a road with build in induction/wireless charging tech. so while you drive your electric car on those types of roads the car get more power back into it than it uses to go forward, so the car is charging while driving. but they have a lot to figure out before those "charging roads" become a reality in the real world. for example: - the need to find a way to drastically reduce the costs of all the tech they have to put into those roads. they are significantly more expensive than normal roads. - they need to find a way to make it more efficient. to much electricity gets lost between the road and the battery of the car. - they have to decide on a universal way to build them. so every electric car can use a "charging road" everywhere in the world. - they need to decide on what roads could/would be turned into "charging roads", because it's unfeasible to turn all road into those. (maybe only highways)

@@ChristiaanHW As a Mechanical Engineer, can't wait for these tech to be figure out in time , some Swedish tech companies have started making some breakthroughs in road charging platforms.

@@ChristiaanHW@ChristiaanHW That's an interesting point you brought up. I know a small town in Michigan that's working with entrepreneurs and companies to build that kind of future

Yeah, I hate it when I buy the wrong, well, anything. 😏

1. The energy lost, is lost as heat so it doesn't matter that much. 2. Magnets break under heat and while cooking there is a lot of it. 3. You are not aligning a coil you are aligning a flat metal plate which is easier to do.

You should see the MTB industry for pathetic patents.

Some EVs support this using the charging port. You really don't want it to be wireless, at least at home. It's wildly inefficient.

You would lose tens of kilowatts a day having wireless charging for cars. It will always be slower and more inefficient than wired charging until the end of the universe.

qi can also mean power or inner force or something like that in chinese

It's very inefficient. They really don't need to do this.

​@@spacetoast7783 the us has one of the nist efficient power grids

@@Rani_-jd9ub ?????????

We already have wireless power converters deployed at your location. It’s called a transformer. It existed before you were born.

Right….sure those worked with consumer safety….right

Yes, and…? 🤔

Not real wireless until the power plant beams it directly into your devices

@@Lyoishinot wireless until the coal can radiate directly into phone hundreds of miles away

It's literally impossible for wireless charging to ever be faster or more efficient than wired charging. To do so would break the laws of physics. Magnetic inductance will always have more loss than the loss over a solid conductor.

Fast charging is not a good idea if you want the battery to last….moot point in that case

No it will create more e-waste since their goal is to spreads to other appliances meaning everything would have to come with a charger instead of a simple cable plugged into a socket. Did you see how big the charger was for that kettle? I'm not excited about this stage at all, it would only be good if one single device could power everything.

Yes.