TL;DW: Fast charging over 2 years only degraded the battery an extra 0.5%, even on extremely fast charging Android phones using 120W.
And with that, hopefully we can put this argument to rest.
TL;DW: Fast charging over 2 years only degraded the battery an extra 0.5%, even on extremely fast charging Android phones using 120W.
And with that, hopefully we can put this argument to rest.
That depends on the manufacturer, some do, some don’t. My phone has a setting to control the max charge, so I set it to 80% when I got it.
Yes, but that 100% is not really that. It has been programmed to display that percentage, when i reality its 80%.
No, I’m saying that not all manufacturers have that limit, and it’s a relatively new setting (last few years). If you have an older phone or something not from the top few manufacturers, it might not have that feature.
This is like spinal tap. Yeah but my phone charges to 110%. I don’t think you understood what they’re trying to say. Changing what 100% means isn’t a setting or “relatively new”
I’m saying when your phone charges to 100%, some manufacturers take that to mean 80% of capacity, whereas others actually charge the battery to 100% of capacity.
Exactly, which is neither a user setting or relatively new. Battery manufacturers have always had to decide what voltage is what state of charge (percent).
The user setting where you limit it to 80% is on top of what the previous commenter was describing
Sure, if the manufacturer sets it to not charge to the max. I’m saying some manufactured charge to the max by default, hence why that setting is useful.
I think you’re leaning too much into the false assumption that “the max” is some final and definite thing.
Batteries aren’t charged from “empty” to “max”, there is no “max”. They’re charged from one voltage level to another which isn’t in a percentage value. How do you think your phone knows what percentage a battery is at?
“The max” is the highest voltage the battery can safely store with reasonable losses, and “empty” is the lowest voltage the battery can safely charge from. Or something like that, I’m not a battery engineer. There’s surely a bit of buffer here since users will use it outside of ideal circumstances (ambient temperature, heat dissipation, etc).
Regardless, those numbers come from the battery manufacturer. I’m guessing phone manufacturers add some extra buffer given the properties of the phone (heat generated by electronics, heat dissipation of the case, etc).
None of that has anything to do with what I’m talking about.
The 20-80% range is on top of that and is based on efficiencies in battery tech. That’s the sweet spot of battery longevity, and some phone manufacturers limit charging to the top end and most (all?) warn when you hit the lower bound. But not all manufacturers report 100% when it hits that upper bound of that range. Many do, but not all. Some report 80% and let you bypass it, and some don’t cap that upper bound.
No, they’re saying that some hardware manufacturers report 80% as 100% (as you noted) while others do not. Just like some manufacturers report 5% as 5% while others report 10% as 5% with the realization that most people misjudge when they’ll be able to charge.