How Wireless Charging Works, According to a Former Nokia R&D Director | WSJ Tech Behind

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Published 2024-05-14

Wireless charging is based on induction, a field that’s seeing rapid innovation. Now, as the universal wireless charging standard makes its first generational update, Qi2 will bring Apple, Samsung and other smartphones to the same universal charging standard. This will create more efficiency and help pave the way for a range of innovations for devices and accessories beyond cell phones.

WSJ explores the tech behind wireless charging and looks at where it is heading in the future.

Chapters:
0:00 Wireless charging
0:41 How the tech works
3:01 How the tech originated
4:16 Where the tech is going

'The Tech Behind' explores the amazing engineering, computing, science and algorithms that power our favorite tech.

#Charging #Tech #WSJ

All Comments (21)

@wsj 1 month ago

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@spacetoast7783 1 month ago

I suppose it'd be nice to see public wireless charging for small devices. Plugging into a public USB cable is always sketchy.
@user-vj4sn1hk3n 1 month ago

Make so much sense and sensibility.
@johnl.7754 1 month ago

Good to know. Will look out for 2.0 products
@Cier433 1 month ago

A solution that only causes greater electricity consumption due to its greater inefficiency in energy transmission than if the cell phone were connected directly by cable.
@JosueMartins 1 month ago

Thanks for the informative video.. This is what we need more on youtube.
@dgusev 1 month ago

What is the efficiency of the power transfer for Qi charger and for the high power wireless power transfer devices? I assume 70-80% is a quite real number.
@cappybenton 1 month ago

How much more power does it take to wirelessly charge something?
@SamIAm254 1 month ago

It's a mini induction burner! Wires are cool, literally! Much more efficient (not to mention cheaper). With a $5 silicone stand, you have a dock too!
@CastleBomb44 1 month ago

lol, There are lot of bad wireless chargers. Some of them making your batter way too warm (above 40c'). I like the idea of it, but hopefully QI2 fixes a lot problems with the original Qi chargers. Where are the Qi2 Android phones ?!?!?!?
@hsuantingchen490 21 days ago

this is SO cool
@ninjanerdstudent6937 1 month ago

1:06 It is not wireless.
@Clark-Mills 1 month ago

I learnt something technical on WSJ! Well done... Shocked Geek
@heybigchris 1 month ago

If it's anything like the evolution of Unreal Engine, then Qi 9.0 means UNLIMITED POWAAAAA ⚡⚡⚡
@prosperousmind7755 1 month ago

Hygiene, accessibility and waterproofing, etc. What other advantages could there be?
@heinousanus9352 1 month ago

Phones don't die because of broken connectors, they die because of non replaceable batteries. We don't need wireless charging, we need replaceable batteries for devices that would otherwise work fine for 20+ yrs. You don't solve broken connectors with wireless charging you solve it with a proper connector, which USB-C is.
@auro1986 1 month ago

is making holes for charging ports in phones that expensive that wireless charging is required?
@CannabisTechLife 1 month ago

Been using my old Nokia charging pads all these years to charge my android phones (currently my zFold4)
@SolaceEasy 1 month ago

No mention of power loss vs cabled charging. Start buying carbon offsets for your convenience.
@sacgeekgirl 1 month ago

Glad to hear they'll be coming out with new faster chargers safely ❤❤❤