3 ms·

> up to charging it so quickly the device oveheats (140w USB c charger into either phone) That isn't how USB-PD works / a problem with USB itself, The device b

by kec 4y ago

> up to charging it so quickly the device oveheats (140w USB c charger into either phone) That isn't how USB-PD works / a problem with USB itself, The device being charged controls the rate of charge: Sinks (in this case, your phone) request a voltage and current from the source, going off of a list of what the source reports that it supports. If the phone can only support say 10W charging it's going to request 10W of power regardless of how oversized the charger is.

paulmd 4y ago
those sorts of fast-charge speeds are incredibly bad for the battery regardless of whether the device will let it do it - I think this is something the EU should step in and regulate tbh, because that's a huge vector for e-waste. At best you're changing the battery much more frequently, which is still e-waste, and often those devices are ending up in the trash because apple is the only vendor with a serious battery-replacement programme. third-party batteries are uniformly trash. set a maximum of a 1 hour charge speed and pop up a notification that allows the user to manually elect to supercharge the battery faster, imo. it shouldn't be an automatic "the charger supports it, imma nuke the battery", that just sounds like vendors speeding up the pace of planned obsolescence. people always complain about this with wireless, that the heat from a 5W wireless charger is somehow damaging the battery and causing e-waste as a result, and yet you've got vendors who are bragging about how they're zapping a phone battery with a 140W charger to get a third of a charge in 5 minutes or whatever, that's terrible as a general practice.
- ChuckNorris89 4y ago
  - samatman 4y ago
    Specifically, process improvements means that modern batteries aren't prone to dendrite formation under high rates of charge. Good thing too, because electric cars wouldn't be practical otherwise.
  - paulmd 4y ago
    Surely you can phrase that a little more civilly? I've worked with batteries for decades across various chemistries and yes, fast charging definitely does decrease the battery life. Maybe it's changed in the meantime, but your post isn't appropriate for this community.
  - dang 4y ago
    Would you please stop breaking the site guidelines? You've done it at least twice in this thread (https://news.ycombinator.com/item?id=32717674 https://news.ycombinator.com/item?id=32717674 is the other one I saw). We ban accounts that post like this, and we've had to warn you about this repeatedly already: https://news.ycombinator.com/item?id=32280825 https://news.ycombinator.com/item?id=32280825 (July 2022) https://news.ycombinator.com/item?id=21875253 https://news.ycombinator.com/item?id=21875253 (Dec 2019) https://news.ycombinator.com/item?id=21143693 https://news.ycombinator.com/item?id=21143693 (Oct 2019) Continuing like this will get you banned. I don't want to ban you, because you've also posted good things. Therefore if you'd please review https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html and stick to the rules when posting here, we'd appreciate it.
    - ChuckNorris89 4y ago
      >You've done it at least twice in this thread (https://news.ycombinator.com/item?id=32717674 https://news.ycombinator.com/item?id=32717674 Sorry, but what guideline did that comment break?
- syntheticcdo 4y ago
  Apple gets this right. When I plug in my iPhone at night, regardless of the PD of the source it's connected to - it informs me that it's doing "Optimized Battery Charging" and will be fully charged by my wake up time. It slurps up whatever it can get if I plug in my phone any other time of the day - if I plug in my phone at 11% at 1pm, it probably means I missed my nightly charging cycle and I do really need the fast charge.

by kec 4y ago

paulmd 4y ago

those sorts of fast-charge speeds are incredibly bad for the battery regardless of whether the device will let it do it - I think this is something the EU should step in and regulate tbh, because that's a huge vector for e-waste. At best you're changing the battery much more frequently, which is still e-waste, and often those devices are ending up in the trash because apple is the only vendor with a serious battery-replacement programme. third-party batteries are uniformly trash. set a maximum of a 1 hour charge speed and pop up a notification that allows the user to manually elect to supercharge the battery faster, imo. it shouldn't be an automatic "the charger supports it, imma nuke the battery", that just sounds like vendors speeding up the pace of planned obsolescence. people always complain about this with wireless, that the heat from a 5W wireless charger is somehow damaging the battery and causing e-waste as a result, and yet you've got vendors who are bragging about how they're zapping a phone battery with a 140W charger to get a third of a charge in 5 minutes or whatever, that's terrible as a general practice.

ChuckNorris89 4y ago
- samatman 4y ago
  Specifically, process improvements means that modern batteries aren't prone to dendrite formation under high rates of charge. Good thing too, because electric cars wouldn't be practical otherwise.
- paulmd 4y ago
  Surely you can phrase that a little more civilly? I've worked with batteries for decades across various chemistries and yes, fast charging definitely does decrease the battery life. Maybe it's changed in the meantime, but your post isn't appropriate for this community.
- dang 4y ago
  Would you please stop breaking the site guidelines? You've done it at least twice in this thread (https://news.ycombinator.com/item?id=32717674 https://news.ycombinator.com/item?id=32717674 is the other one I saw). We ban accounts that post like this, and we've had to warn you about this repeatedly already: https://news.ycombinator.com/item?id=32280825 https://news.ycombinator.com/item?id=32280825 (July 2022) https://news.ycombinator.com/item?id=21875253 https://news.ycombinator.com/item?id=21875253 (Dec 2019) https://news.ycombinator.com/item?id=21143693 https://news.ycombinator.com/item?id=21143693 (Oct 2019) Continuing like this will get you banned. I don't want to ban you, because you've also posted good things. Therefore if you'd please review https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html and stick to the rules when posting here, we'd appreciate it.
  - ChuckNorris89 4y ago
    >You've done it at least twice in this thread (https://news.ycombinator.com/item?id=32717674 https://news.ycombinator.com/item?id=32717674 Sorry, but what guideline did that comment break?
syntheticcdo 4y ago
Apple gets this right. When I plug in my iPhone at night, regardless of the PD of the source it's connected to - it informs me that it's doing "Optimized Battery Charging" and will be fully charged by my wake up time. It slurps up whatever it can get if I plug in my phone any other time of the day - if I plug in my phone at 11% at 1pm, it probably means I missed my nightly charging cycle and I do really need the fast charge.