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A comment on IPhones start slowing down after a year. Parent comment

Re:IPhones start slowing down after a year by TeMPOraL on Thursday December 21, 2017 @12:46PM (#15980950)
Drawing power causes voltage drops; I suspect what they're saying is that a degraded battery under heavy load will momentarily drop from 40% to under cutoff threshold.
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Re:IPhones start slowing down after a year by cptskippy on Thursday December 21, 2017 @02:14PM (#15981880)
Large voltage drops under load are typically an indication of a bad cell or battery. You could argue this is beneficial to the customer but Apple is hiding the fact that they're doing this. Why?

I recall when they switched to non-replaceable batteries in MacBooks, they boasted how their battery lives were the best and would last x years. Is this how they did it?

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