My thinkpad won't charge. Do I need an external or internal battery? : r/ thinkpad
Genuine Lenovo battery not attached : r/thinkpad
power management - Lenovo X1 Thinkpad battery not charging in 17.04 - Ask Ubuntu
Genuine Lenovo Battery Not Attached, got this pop-up after 1 year of use without any problem, anyone got a solution? The batter is from Sanyo. : r/ thinkpad