Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Teardown of Apple 40W dynamic power adapter with 60W max

chargerlab.com

Post reply on HN
Print view View original

101–110 of 226 posts

Re: Teardown of Apple 40W dynamic power adapter with 60W max

#101

Post by londons_explore »

chvid wrote: post #100

Great that Apple is making smaller chargers. I use a 65w anker 715 charger which weighs 120g for my laptop - ridiculously small compared to the massive 140w charger the laptop came with.

I use a tiny 15 watt charger for my laptop.

It can just about charge the laptop whilst web browsing, but if anything CPU heavy happens then the battery discharges a bit.

But over a whole workday I find the charger is enough, and I prefer a smaller lighter charger over the ability to run a game 24x7.

Re: Teardown of Apple 40W dynamic power adapter with 60W max

#102

Post by londons_explore »

LorenDB wrote: post #42

I wonder what temperature this thing hits. I have an even smaller 65 W GAN charger[0] that gets pretty toasty under load. I can't really see Apple wanting to ship a toasty charger, though. [0]: https://rollingsquare.com/products/supertiny-the-smallest-65...

Toastyness is regulated by law for anyone sticking to the law.

Many devices are made larger simply to have more surface area to spread the heat over to stay within the law.

Re: Teardown of Apple 40W dynamic power adapter with 60W max

#103

Post by londons_explore »

Reason077 wrote: post #13

Hopefully Apple releases a UK version of this adapter soon. The design looks very similar to my beloved Apple UK 20W charger [1]. I’d buy a 40-60W version in a heartbeat! [1] https://www.amazon.co.uk/Apple-20W-USB-C-Power-Adapter/dp/B0...

China makes a 50 watt PD version with 2 ports already.

https://a.aliexpress.com/_EuPD4j8

It can deliver 50 watts entirely to 1 port, unlike most others where they mean 25 watts per port.

$5.50 with free shipping.

Re: Teardown of Apple 40W dynamic power adapter with 60W max

#104

Post by chvid »

londons_explore wrote: post #101
chvid wrote: post #100

Great that Apple is making smaller chargers. I use a 65w anker 715 charger which weighs 120g for my laptop - ridiculously small compared to the massive 140w charger the laptop came with.

I use a tiny 15 watt charger for my laptop. It can just about charge the laptop whilst web browsing, but if anything CPU heavy happens then the battery discharges a bit. But over a whole workday I find the charger is enough, and I prefer a smaller lighter charger over the ability to run a game 24x7.

Yes. I probably could do with an even smaller charger.

Re: Teardown of Apple 40W dynamic power adapter with 60W max

#105

Post by dangus »

geerlingguy wrote: post #76

Apple has a history of some quality and extremely compact power supplies. I have to wonder if they have a team with an EE paired with an origami artist, with how creative some of the layouts get.

Quality, yes. Extremely compact, no.

Something like the Anker Prime 100W GaN charger is far more compact than any charger Apple has shipped.

Now, granted, many compact chargers lie about how long they can provide sustained power. That's exactly what this "dynamic" charger is doing, except that it's being more up-front about the fact that it's not a 60W charger, it's a "60W until it's inevitably too hot" charger.

Re: Teardown of Apple 40W dynamic power adapter with 60W max

#106

Post by dangus »

happyopossum wrote: post #84
jorvi wrote: post #59

Earlier quoted context omitted.

You're completely ignoring that Apple is purposely choosing not to also add support PPS and instead use AVS so they can push people from generic Anker / Belkin / Baseus PPS chargers to their own Apple chargers. For a while anyway. It would make more sense if they used it for their MacBook chargers, but AFAIK the sole charger they having going beyond 100W is the 16" Pro charger at 140W. Every other Macbook charger is…

This is coming across as more than a bit delusional. Adding a new standard to a charger is not “forcing” anyone to avoid other chargers in any sense. AVS adds functionality to this charger, it doesn’t take it away from other ones.

If AVS is only part of the USB-C PD spec over 100W then yes Apple is doing something non-standard and not "adding a new standard." They're going to make 3rd party charger providers add some Apple-specific logic that isn't in the PD spec and isn't used by any other devices if this is true.

If this is true, then if you own a 3rd party charger that is up-to-date with the very latest USB PD specs, your charger is going to charge an iPhone 17/Air/17 Pro more slowly than buying Apple's new charger.

(I don't claim to know the technical details of whether AVS is part of the spec below 100W or not, I am just going by the comments in this thread and speaking of the hypothetical)

Re: Teardown of Apple 40W dynamic power adapter with 60W max

#107

Post by hazmatt »

Zee2 wrote: post #94
copperx wrote: post #93

Earlier quoted context omitted.

Why would it have to be GaN? a 40W charger wouldn't suffice at a hotel?

From my experience every hotel integrated charger is barely 5V 0.5A, much less PD or anything else. Parent comment was talking about the integrated usb chargers in rooms, if I’m understanding correctly (hence the need to still bring their own)

Confused since 2x10W sounds adequate for their overnight charging. (Which is still an upgrade for hotels, but a rather old one..)

Re: Teardown of Apple 40W dynamic power adapter with 60W max

#108

Post by lotsofpulp »

londons_explore wrote: post #103
Reason077 wrote: post #13

Hopefully Apple releases a UK version of this adapter soon. The design looks very similar to my beloved Apple UK 20W charger [1]. I’d buy a 40-60W version in a heartbeat! [1] https://www.amazon.co.uk/Apple-20W-USB-C-Power-Adapter/dp/B0...

China makes a 50 watt PD version with 2 ports already. https://a.aliexpress.com/_EuPD4j8 It can deliver 50 watts entirely to 1 port, unlike most others where they mean 25 watts per port. $5.50 with free shipping.

I’m seeing $17+.

Re: Teardown of Apple 40W dynamic power adapter with 60W max

#109

Post by justinparus »

londons_explore wrote: post #103
Reason077 wrote: post #13

Hopefully Apple releases a UK version of this adapter soon. The design looks very similar to my beloved Apple UK 20W charger [1]. I’d buy a 40-60W version in a heartbeat! [1] https://www.amazon.co.uk/Apple-20W-USB-C-Power-Adapter/dp/B0...

China makes a 50 watt PD version with 2 ports already. https://a.aliexpress.com/_EuPD4j8 It can deliver 50 watts entirely to 1 port, unlike most others where they mean 25 watts per port. $5.50 with free shipping.

Does it follow the protocol properly? I’ve had some chargers that don’t default to the lowest output for dumb usb-c devices

Re: Teardown of Apple 40W dynamic power adapter with 60W max

#110

Post by red369 »

Barbing wrote: post #95
joecool1029 wrote: post #85

Earlier quoted context omitted.

Probably wearing your batteries out more. Bunch of studies done have found fast charging causes no additional degradation. Unless you hold the charge below 90% or something letting them dwell at 100% for hours is worse.

Why wearing out more? I’d been planning on pulling out an old charger to slow charge overnight.

I suppose the previous comment was likely saying more compared to not charging overnight, and fast charging in the morning.

I would also have guessed the slow charging was better, but that is an uninformed opinion. I'd be quite interested in what people think.

An extra dilemma - often if I'm around the house or the office all day, I'll just plug in my phone every time I see it reach about 70%, and unplug when it reaches 80% (this is easier to spot if you have low-power mode on for an iPhone because the screen lights up at 80% when low-power mode is turned off). Is it worse to do that 2 or 3 times, compared to just charging to 100% and leaving it on the charger all day. Is being at 100% all day, but not using any (fractions of) charge cycles, worse than doing a few shallow discharges?

Of course, I don't think it really matters, but it's the kind of thing that I wonder and then do when I remember.

Post reply on HN