Lenovo ThinkPad X1 Carbon review (2014): new, but not necessarily improved | Engadget
Solved] Lenovo Plugged In Not Charging - Driver Easy
Unlocking Thinkpad Batteries | Hackaday
New T480, second battery not charging. Is it possible to somehow force the charging process? Battery has just 4.6 volts, and only 1 charge cycle. I dont believe it degraded so quickly