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this post was submitted on 26 Sep 2023
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Technology
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Some context:
http://www.antiscald.com/index.php?route=information/information&information_id=15
At 116F you would require firm, continuous contact for more than 20 minutes to produce a 2nd degree burn, and over 45 minutes to produce a 3rd degree burn.
So one semi long YouTube video is all it would take to get a burn? And you’d not even need a full length movie to need a trip to the hospital?
I get that these aren’t “instant” burns, but this is still a device people regularly hold for hours a day. And if you don’t realize it’s heating up, you’re likely to notice only when you’re in pain.
Or a game with some relatively large 3d model and textures. I guess that, if the average play time is about 45 minutes, then...not good at all. But who'd hold a triple digit temperature thing in his hands?
If the temp increase is slow, people don’t realize it’s hot unless they happen to put it down or reposition it.
When my son was younger, he burnt his legs by using a laptop on his lap. It got hot, he didn’t realize.
Same concept as being in the shower and very slowly changing the temp until you’re showering in fully hot/cold water.
Didn't think about that, it's like the frog in a pan example than...true
Ironically, a frog would actually jump out of the water if its temperature slowly increases.
https://en.m.wikipedia.org/wiki/Boiling_frog
Realistically speaking, since this is in fast charging only, and most people don't let their phone battery drain to 0, I think it's unlikely that 3rd degree burns will be an issue within reason. The iPhone 15's reported to take about 30 minutes to charge from 0 to 50%, so if I assume the other 50% also takes 30 minutes, then really, someone won't be hitting 45 minutes unless they're charging from below 25% to full.^[I know charging isn't actually linear progression, but I don't really wanna do the math.]
That said, 3rd degree burns may be an issue once you slip a case on it that insulates the phone, making it yet hotter, and 2nd degree burns will be more of an issue too. I'd be interested in seeing what the peak temp is during fast charging with a case on, especially one of the thicker cases. If it internally gets to more than 140 degrees Fahrenheit, there's absolutely risk that it could explode, and even if it's not doing it externally, internally it may be nearing those temps.
Iphones have fast charging now?
Apparently. I'd drop dead before I buy one myself but a friend told me today that with fast charging the 15 charges to 100% in 55 minutes.
Sooo... still fast charging speeds from over 5 years ago. What have they messed up for it to heat up like that? Lmao
Well naturally this is a brand new technology that Tim Apple invented last week. It's the best in the industry and really, $1000 for a phone this cutting edge is a bargain, even if it can literally burn your hands. /s
Complete opposite. I've never seen any other group of people let their phone drop so low. It's like they do it on purpose. I blame the lack of battery % so they don't get the anxiety effects.
What about 1st degree burns? Would these be ok?