this post was submitted on 16 Feb 2024
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It's not paranoia, it's an issue of how Li-ion batteries work.
Literally. It even extends to other Lithium based chemistries too, like LiFePo4.
It's not like this information is hiding either - ask a battery manufacturer/distributor for a Li-ion cell's charge cycle data, what you'll find is most manufacturers only guarantee 300-500 cycles before the battery has lost 80% of its usable capacity at 100% DoD and charging to the 100% SoC voltage. Decreasing just the maximum SoC to 90% brings massive battery longevity gains, where estimated cycles increase to 1000 (and beyond in some cases), while still retaining over 80% of the battery's usable capacity.
All my personal devices that I've checked sadly target 100% SoC voltage and charge rate, without regard for the longevity of the battery. Just seems almost like they've just punched in the numbers from the "ABSOLUTE MAX RATINGS" part of the datasheet and called it a day.
It's a little disappointing that a lot of people are under the belief that their product has been designed to last as long as it can, when in most cases this intentionally or accidentally isn't the case right now, in industries outside of backup power and EVs