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

chargerlab.com

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

#141

Post by CraigJPerry »

arvinsim wrote: post #97
SomaticPirate wrote: post #47

Earlier quoted context omitted.

I believe current battery technology is optimized for fast charging. You are incurring damage every time your battery goes below 20% or exceeds 80% (see current EV charging recommendations). Even LinusTechTips did a video that showed the length of charging doing more damage than fast charging. For the concern about thermal damage, most phones will throttle their charge if they become too warm. Personally, I feel my w…

I agree. I started using wireless charging with my iPhone 15 Pro Max. After a year of use, I am already near the 80% max capacity. My previous phones never even got below 90% in their lifetime.

Same phone 89% on 535 cycle count, manufactured july 2023, first used september 2023. Almost exclusively wirelessly charged every time.

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

#142

Post by snops »

The best part I find about ChargerLab teardowns is identifying all the passive and discrete components.

Western distributors tend to only stock western/japanese brands of these, but they can make up a sizable fraction of the BOM (especially electrolytic capacitors) so knowing who the big players are comfortable with using is very handy. LCSC stock a lot, but its nice to know which suppliers have been proven in use.

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

#144

Post by cenamus »

tecleandor wrote: post #120
arccy wrote: post #118

Earlier quoted context omitted.

don't those have giant magnets....

That'd be an MRI. A CT is, simplifying, an x-ray machine that takes lots of images in slices, then analyze them with certain algorithms to reconstruct 2D and 3D images of the interior of the 'subject'.

Well, not really in slices, but from all angles. So with a computer you can reconstruct the density of whatever you're imaging and also do the slices

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

#145

Post by tyleo »

pshirshov wrote: post #138
tyleo wrote: post #133

If anyone is in the market for power adapters I find SlimQ to be top tier. https://slimq.life/

Would you bother to explain your motivation?

My motivation for buying one was that I used to have a huge laptop charger and my SlimQ is much easier to carry around.

My motivation for sharing is that I like the product and thought others might too. People responding in a thread about power adapters might be in the market for power adapters so I want to help them find good products.

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

#146

Post by tyleo »

lloydatkinson wrote: post #139
tyleo wrote: post #133

If anyone is in the market for power adapters I find SlimQ to be top tier. https://slimq.life/

I was mildly impressed until it got to the wall of slack-jawed selfies featuring titles like “gen-streamer” and my scam alarm bell started ringing.

I own a couple of these devices and they are the real deal but I understand how that can be off putting.

Full disclosure: they use some Chinese shipping service I’ve never heard of that may raise scam alerts further.

The adapters are smaller than comparables I have and work with every device I’ve tried. That being said, I haven’t done a teardown and I’ve only used them about half a year so far.

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

#147

Post by dylan604 »

thenthenthen wrote: post #63
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...

I remember the old macbook pro chargers, they and the cable would get so hot it melted the insulation of the cable (over time). Not to mention the self-desoldering GPU’s inside the actual laptops.

I had 2 cables that melted like this. I eventually bought the newer version with a different insulator. Used with the same charger and same laptop, but no melting.

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

#148

Post by dylan604 »

arvinsim wrote: post #98

UGreen and Anker has me already covered for these types of powerful but small chargers. They are not limited to one port like the Apple chargers are.

Are they full power to both ports simultaneously, or do they split between them?

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

#149

Post by appreciatorBus »

joecool1029 wrote: post #85
appreciatorBus wrote: post #31

Earlier quoted context omitted.

I still keep a few 5 watt chargers around and use them for overnight charging whenever possible. I reserve the use of high power chargers for the odd occasion when I need the speed.

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.

Yes I’m aware of the studies re: fast charging , and the importance of avoiding dwelling at high charge levels :)

If a device charged overnight does not support limiting charging to 80%, a 5W charger means the device spends less time between 80% and 100% versus a higher wattage charger.

For a newer device that does support limited charging to 80%, I agree that there’s probably a little difference in battery aging between different speed chargers, however for overnight charging, where I really don’t care how long it takes to charge, I would still go with the lower power.

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