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Battery overcharing

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IanB:

--- Quote from: Siwastaja on December 26, 2023, 02:12:21 pm ---Death of which was very unlikely caused by the normal use you described. But keep believing.

--- End quote ---

I don't have to believe. I simply can be cautious. It is completely harmless for me to act cautiously, and it might not be harmless for me to act otherwise. Therefore belief is not required to eliminate possible risks, it is does not matter how material those risks might be.

To give you a parallel: parachuting is a perfectly safe activity. On the other hand, if I never go parachuting, I am never going to get killed in a parachute accident.

AVGresponding:

--- Quote from: IanB on December 26, 2023, 03:21:21 pm ---
--- Quote from: Siwastaja on December 26, 2023, 02:12:21 pm ---Death of which was very unlikely caused by the normal use you described. But keep believing.

--- End quote ---

I don't have to believe. I simply can be cautious. It is completely harmless for me to act cautiously, and it might not be harmless for me to act otherwise. Therefore belief is not required to eliminate possible risks, it is does not matter how material those risks might be.

To give you a parallel: parachuting is a perfectly safe activity. On the other hand, if I never go parachuting, I am never going to get killed in a parachute accident.

--- End quote ---

Technically, you could, if, say, a parachutist landed on you...

Halcyon:

--- Quote from: IanB on December 26, 2023, 11:15:59 am ---
--- Quote from: Halcyon on December 26, 2023, 11:10:54 am ---It depends on the device. I've had a Samsung Galaxy S7 plugged in almost 24/7 for years, nil issues. Same with my Google Pixel phones. My old Lenovo ThinkPad, different story. It depends on the device, manufacturer, software and your individual configuration. What's the golden combination? Buggered if I know. I think it's a combination of "You get what you pay for" versus wisdom.

--- End quote ---

If some devices have issues, we cannot say "absolutely no issues". We have to say, "there may be issues in some cases".

--- End quote ---

I think it's safe to say that the mere act of leaving a phone plugged in for extended periods will not damage the battery due to overcharging, however, it may shorten the battery life due to other factors, whether that be elevated temperatures, charging too quickly over its life, high number of charge/discharge cycles, poor product design etc...


--- Quote from: tooki on December 26, 2023, 01:00:45 pm ---I once replaced the degraded battery in an iPhone 6 (my obsolete backup phone) with a new battery (replaced at an Apple Store, so zero chance of counterfeit battery) and after a year of being left plugged in, the battery swelled.

--- End quote ---

I think there needs to be further explaination here. The iPhone 6 series were riddled with problems. Premature failure of the LCD/digitiser, to battery issues (as you have found out). The iPhone 6 were just a garbage phone with a very high failure rate. Not sure why, but when I was doing digital forensics examinations on an iPhone 6 that wouldn't boot, first thing that got removed was the battery and we powered them up using external power.

PlainName:
I think it's safe to say that 'shorten the battery life' is what is included in 'damage the battery'.

Siwastaja:
I have seen dozens of swollen batteries and they all swelled while stored at optimum state-of-charge and not plugged in. Still, I don't make a conclusion that storing at 30-60% SoC and unplugged causes swelling. My conclusion instead was, these cells were not of very high quality and just reached their end-of-life. Many other cells did not swell. Now, if I had some of those "plugged in" all the time, I guess they would have still swelled. I can totally see how easy it is then to reach a conclusion how the swelling must have been caused by them being "plugged in", especially when I can go to the echo chamber called the Internet and amplify this bias.

And yes, even good brands like Apple or Samsung have had battery issues, varying from faster-than-expected wear to outright battery fires and "explosions" (not actual explosions, but something which looks quite explosive to laymen).

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