No doubt they will redefine maximum battery capacity to a figure that does achieve 80% over 1000 cycles. If you under-declare maximum capacity then there is a lot of headroom for actual degradation before you start to show degradation to the user.

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floatrock 7 hours ago | parent | next [-]

iPhone 17 Pro launch specs:

> Video Playback: Up to 27* hours

> *: 25 hours in the EU

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cptskippy 7 hours ago | parent | prev | next [-]

This is what they should have been doing all along. My Pixel tells me that charging above 80% is bad for battery longevity and I should set a charge limit. Well then maybe 80% should be the new 100% and the advertised capacity should be the 80%.

	▲	Aachen 6 hours ago \| parent [-]
		This balancing act is already happening. If you modify the battery controller, you can totally continue charging beyond the voltage that the phone considers to be 100%. It also increases the risk of damaging the battery (https://www.acebattery.com/blogs/what-will-happen-when-a-lit...). What they define as 100% is already some point on a damage probability curve, and charging to anything below that point will further decrease the amount of battery stress (for li-ion batteries and similar technologies) Fwiw, based on tests I've seen recently such as https://www.youtube.com/watch?v=Lj4LMlGr4og, I think limiting to 80% is overblown, but somewhere in the 90%s could be a sweet spot that gives you several hours' longer battery life than with 80% but still has a much reduced chance of significant degradation. I don't understand why they didn't make this configurable

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7 hours ago | parent | prev [-]

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