| General > General Technical Chat |
| Battery overcharing |
| << < (14/15) > >> |
| Halcyon:
--- Quote from: PlainName on December 28, 2023, 10:32:12 am --- --- Quote from: Halcyon on December 27, 2023, 11:11:59 pm ---they know full well their product is crap, the battery is going to swell and the user isn't going to follow their instructions, therefore they can turn around to the user and say "you didn't follow instructions" while denying any warranty claims. --- End quote --- OK, so you now agree that there may be a battery issue (not necessarily swelling - reduced life is sufficient) if the device is left on charge past when it is fully charged? --- End quote --- It's not a matter of "now" agreeing with something, my stance and advice hasn't changed. Suffice to say, that billions of phones are plugged in to charge overnight, every night and we aren't seeing a huge failure rate even after a few years. It would be misleading to say that leaving it plugged in like this will cause problems, or even premature failure. With or without those "battery saving" technologies, all batteries degrade. How fast that happens largely depends on the device, your settings and your habits. As I said earlier 99% of consumers are not going to care (or even understand the science behind this) and will charge their phone so it's ready to go when they need it to be, and there is nothing wrong with doing that. As someone who does know, I still charge my phone every night*, even sometimes several times a day and I still use quick charge when I know I'm about to go out and I need extra charge in my phone. *Something I have done since my first mobile phone in 1997. |
| IanB:
No-one has ever suggested that plugging a phone in every evening to charge overnight would cause a problem. Millions of people do that, and it evidently is a normal and expected way to use a phone. What is being suggested is that if you take a phone, plug it into the charger, and leave it like that without unplugging it for several months, then that might cause a problem. This is obviously hard to gather data for, since very few people do that with a phone. The whole point of a phone is that you carry it with you. Siwastaja says that in theory that shouldn't cause a problem. What I say is that we don't know if every sample of a battery, and every embodiment of a battery and charging system out there, is without flaw in design or manufacture. Enough people have reported problems with leaving a device plugged in and on charge for days, weeks, months continuously that it might be a problem. I think there is enough doubt in this area that it is not worth taking the risk. |
| Halcyon:
--- Quote from: IanB on December 28, 2023, 11:17:12 am ---No-one has ever suggested that plugging a phone in every evening to charge overnight would cause a problem. Millions of people do that, and it evidently is a normal and expected way to use a phone. What is being suggested is that if you take a phone, plug it into the charger, and leave it like that without unplugging it for several months, then that might cause a problem. This is obviously hard to gather data for, since very few people do that with a phone. The whole point of a phone is that you carry it with you. Siwastaja says that in theory that shouldn't cause a problem. What I say is that we don't know if every sample of a battery, and every embodiment of a battery and charging system out there, is without flaw in design or manufacture. Enough people have reported problems with leaving a device plugged in and on charge for days, weeks, months continuously that it might be a problem. I think there is enough doubt in this area that it is not worth taking the risk. --- End quote --- Indeed. However one interesting piece of anecdotal evidence I can share is this: In my previous job, we did have a mobile phone which spent 90-95% of its life plugged into the charger. It was an old Samsung Galaxy S7 I think from memory, but in any case, it was used as an on-call phone. Most people when they were on-call simply diverted the number to their private phones so they didn't have to carry two phones around. That original battery was still going strong mid last year. My only thoughts on this was that it had very low charge/discharge cycles and when it was off charge, it would only be for a few hours or half a day at most. Despite how "bad" it may be to keep these types of batteries always at 100%, perhaps any damage was offset due to its low use and relatively easy life? And before anyone has a dig at me saying that this doesn't prove anything: I realise this is a sample size of 1, so take it as you will. |
| Siwastaja:
--- Quote from: IanB on December 28, 2023, 11:17:12 am ---No-one has ever suggested that plugging a phone in every evening to charge overnight would cause a problem. Millions of people do that, and it evidently is a normal and expected way to use a phone. What is being suggested is that if you take a phone, plug it into the charger, and leave it like that without unplugging it for several months, then that might cause a problem. --- End quote --- It would need to be a very weird "feature", I'd say bug, because overnight charging already is a significant %, nearly 50% for some people, so upping that to 100% is not going to be a massive difference. But of course, anything can happen, faulty products and weird corner cases pop up every now and then, especially for something which does not see much testing. Although I think you might underestimate the number of people who use the phone plugged in for nearly 24/7. Think about those who drive for a living (bus, taxi, truck drivers etc.) who plug the phone in the car, and also for the night. It might be plugged in for 22 hours a day. But of course, there might be a plain old bug which triggers when the phone has been continuously plugged in for, let's say 24.855 days, after which a signed 32-bit integer counting milliseconds wraps around, and maybe triggers increase of charge voltage from 4.20V to 4.40V. Or something like that. It is just way more likely that your battery was already in bad condition and not specifically killed by what you did, but without forensics, we are guessing. |
| IanB:
--- Quote from: Siwastaja on December 28, 2023, 07:18:02 pm ---It is just way more likely that your battery was already in bad condition and not specifically killed by what you did, but without forensics, we are guessing. --- End quote --- Yes, and I have read and absorbed what you have said, and I agree that this may be the case. I assume from the tone of your replies that you have some expertise in the matter, and expert opinions are always worth listening to. |
| Navigation |
| Message Index |
| Next page |
| Previous page |