A few months ago, my Fujtisu P772 laptop received a Fujtisu update through Windows update that gives a warning that my battery is considered deteriorated and I must update the firmware to prevent a potential battery-related thermal incident. It let me postpone it a few times, but there was no way to eliminate the warning and if I tried to remove the software, it would automatically come through Windows Update again.
In the end, I let it go through the firmware update and haven’t thought anything about it until I decided to do a fresh Windows installation with the 1903 release. As soon as Windows finished installing and reached the desktop, that battery warning presented itself:
It’s bad enough as it is that as laptop batteries age, they lose capacity and Fujtisu has taken this a step further by reducing the maximum charge level to 65%.
So far I’m not aware of any other laptop manufacturer doing this and don’t recall reading any advice on not to fully recharge old lithium ion batteries. I can just imagine the outrage electric car makers would cause if they decide to apply software updates to customer cars so that batteries older than a few years can no longer recharge above 65%.