ThinkPad has this. My battery only charges to 75% and it must drop to 50% before it starts charging again. You can configure any value for either setting with TLP.
On my thinkpad the screen dims after 30seconds without keyboard activity when not fully charged. Very annoying. It happens also when connected to a charger.
I regretfully set the bios to fully charge again to disable this auto-dim feature.
I regretfully set the bios to fully charge again to disable this auto-dim feature.