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

chargerlab.com

61–70 of 226 posts

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

#61
post #16

Is there a way to slow down these high power chargers? Sometimes I want a fast charge but mostly I want slow to getting hot. I realize overnight charging phones are smart enough to do this but otherwise seems to be impossible without having two different chargers.

If you buy a crappy one it'll thermal throttle itself after a few minutes

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

#62
post #16

Is there a way to slow down these high power chargers? Sometimes I want a fast charge but mostly I want slow to getting hot. I realize overnight charging phones are smart enough to do this but otherwise seems to be impossible without having two different chargers.

I use USB-A ports on a dumb charger, but most likely, it'd be best for the battery to use a charger with PPS support (programmable power supply - the device can request finely tuned voltages, reducing losses and thus heat inside the device).

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

#63
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.

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

#64
post #48

Earlier quoted context omitted.

My current thinking is that the phone shouldn’t negotiate a higher wattage than it wants. Hypothetically, you could bolt it to a 1000W charger, and if it only asks for 30W, that’s all it’ll get.

The concern isn't that a 9000W charger will fry a phone expecting 30W, it's that charging at 30W subjects the phone/battery to more stress/wear than charging at 5W.

What is the logic or science behind that claim? I’ve fast charged my iPhone 16 pro (heavy user) daily if not more often for a year using Apple chargers with the charge limit set to 80%. Remaining battery capacity is still 100%, which is something I’ve never had after a whole year. Fast charge doesn’t seem to hurt.

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

#66

How does one distinguish between all the tiny devils in the details between all possible chargers to have the maximum efficiency in ones iPhone charging?

There really aren’t any nuances to be aware of here. If the charger can provide 45W or more, it will charge your iPhone 17 Pro as fast as it can go. If you have an older iPhone, you don’t even need that much. The Apple charger is mildly interesting because they made a slightly smaller than usual one that displays a dynamic behavior where it boosts up to 60W. That’s it. (If you actually mean efficiency of energy deliv…

There was some speculation that chargers would need the AVS spec to full speed charge the new iPhones, rather than just any USB-PD. Has that been tested yet?

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

#68
post #67

Why do so many websites disable pinch-to-zoom for mobile users? This page is full of interesting close-up photos, but at least on my Android phone, I can't zoom in to see any of the details. Who benefits from disabling this feature?

I am able to pinch to zoom fine on my iPhone

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

#69
This teardown is great!

At my work, we have an X-ray machine for PCB reverse engineering. On Fridays we throw in random stuff from around the office, and sometimes make videos about what we find inside.

A few weeks ago we released an X-ray teardown of several other, older chargers. Very interesting to compare with these fancy new ones!

https://youtu.be/4h4qabPsPfI

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

#70
post #64
post #48

Earlier quoted context omitted.

The concern isn't that a 9000W charger will fry a phone expecting 30W, it's that charging at 30W subjects the phone/battery to more stress/wear than charging at 5W.

What is the logic or science behind that claim? I’ve fast charged my iPhone 16 pro (heavy user) daily if not more often for a year using Apple chargers with the charge limit set to 80%. Remaining battery capacity is still 100%, which is something I’ve never had after a whole year. Fast charge doesn’t seem to hurt.

The logic is that is causes the battery to get hotter.
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