this post was submitted on 17 Jun 2023
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Yes, that's correct but with some extra consideration. There's two kinds of wear for Li-Ion batteries, shelf life and cycle life. To maximize shelf life you want to store at 40% to %50% charge in a cool environment. To maximize cycle life you want to avoid charging and discharging fully.
There's two curves where cycle life and shelf life cross for maximum longevity. For example if you shut off your Li-Ion powered device or remove the battery for long periods, shelf life becomes more significant. Storing at 40% charge in a cool environment will maximize battery life. If you discharge frequently, then keeping the charge cycle shallow will maximize longevity since that's going to be most significant.
Honestly it's complicated to deal with and squeezing all the life you can out of a battery is typically not worth the trouble. Though it's definitely nice when chargers give you options, most don't.
In general Li-Ion batteries are highly desirable for their top tier energy density and that's why they're so ubiquitous, but the wear and safety considerations are big disadvantages. The holy grail of battery technology is to eliminate those issues.