For a comparison, here’s the battery for my W541, made in 2017, first used in 2018. Low charge cycle because it’s always sitting on a desk, fully plugged in 99% of the time, until Jan 2022 (then it became my personal laptop). It’s for a work-from-home work laptop. Only took the laptop to client sites no more than 10 days in the entire life of that battery.
Calibrated the battery again today (just now)…still at 92.7% health. Notice that the 60% start charging threshold, and the 75% stop charging threshold.
Now that’s a quality battery that aged well.
