I don’t need to be a candidate for anything. I charge when I need to, which could be 8am or 8pm. I take it off when it reaches 100% & I move on with my life.
Mods please this close this.
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iPhone XR Finally switched to fast charging
- Thread starter white4s
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Yes. Higher charging amperages add heat. This is known to affect cycle life.
Your usage habits are entirely your own choice, and if you're feel that you're being unfairly questioned, that's understandable and inappropriate.
However, if you're concerned about maximizing the durability of the battery, it's good to embrace all of the practices, not just one. I think that's the point that some are attempting to make, but neither eloquently, nor entirely accurately.
The closest analogy I can think of is for a health-conscious person to both exercise and have a good diet. Either can bring benefits of their own, but not as much as both cumulatively. Nor does regular exercise allow carte blanche to have a junk food diet.
Leaving a device connected to it charger after it's fully charged can be detrimental to battery health, so it's not a bad idea to remove it after the charge cycle is complete. No problem there.
OTOH, the practice of fast charging may also be detrimental to battery health in some circumstances, and if there's little need in your usage habits that require that, you may wish to reconsider it if durability is a concern.
Exercising to keep weight off from a junk food diet isn't exactly the optimal healthy lifestyle.
I think that's the point some are trying, and failing to make.
Batteries generate electricity through chemical reactions, with characteristics specific to the elements used in their construction. Various factors, including environment (temperature), the rate of charge and discharge (the C-rate mentioned earlier), voltage, and chemical state (charge) all play factors in their performance and durability.
Lithium rechargeable batteries typically have a nominal voltage of ~3.7-3.8v, and considered to be fully charged when they reach ~4.2-4.4v, depending on the specific chemistry, which also determines how quickly they can charge, or discharge. Another characteristic is that they can be damaged if left in a state of discharge (which is not 0v, but ~3.0v) or charged above "full" (>4.2-4.4v) and left there. Users aren't concerned with such figures, and would be confused if they were exposed, so consumer devices always present a representative scale that's understandable and relatable, such as the battery % meters.
The sweet spot where they like to live is really in the middle of that range, but pragmatically speaking, few users are willing to sacrifice usable capacity by avoiding those extremes, in exchange for increased life. Pushing the limits regularly may not result in injury, but probability of bad things occurring does go up.
Each battery has specific performance characteristics and handling criteria that manufacturers arrive at through a combination of design, testing, and some compromise, for both safety and practicality. That factors into what Apple allows users to do, within the context of what Apple specifies how well, and how long their devices should perform, under most circumstances.
The bottom line is that if Apple allows its devices to be fast charged, then it's fine to do so, and still live up to the promises it makes in selling the device. If that wasn't true, it would do differently as any reputable company would do.
But there's nothing wrong with striving for better either, as long as it's workable and not counterproductive in some fashion.
In the end, all batteries have a finite life, and countdown clock, no matter how they're treated.
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