Until recently, my daily driver laptop. ThinkPad x200s from 2008. When covid hit I started using my desktop and a month ago I tried the laptop and it doesn't turn on anymore :(
Nowadays nothing noteworthy... maybe my smartwatch, Samsung Galaxy Watch 1.
If it's not just the battery finally giving out, it might be the thermal goop on the CPU / GPU. Late IBM Thinkpads could eat fans annually. Early Lenovo models can't be all that different. Thermal cycling is a rude source of stress... as is the sudden end of routine thermal cycling.