ThinkPad T61 and prior T series plus Other Legacy ThinkPads.
ThinkPad: 11e (Windows), 13, E and Edge series Laptops.
ThinkPad: S Series, ThinkPad Yoga and Twist Laptops.
ThinkPad: X Series Tablet and Helix Laptops.
ThinkPad: P and W Series Mobile Workstations.
ThinkPad: T400 / T500 and newer T series Laptops.
Recently Released Critical Drivers - Read Only.
Recently Released Service Tips - Read Only.
You can also refer to this article regarding the issue:
Go to Drivers and Software > Manual Update > BIOS/UEFI.
Update the BIOS. Download and install the latest BIOS version on the Support Site:
Hold power button down for 10-15 seconds.
Shutdown/ turn off the computer then unplug AC adapter.
It is due to the battery charge self-protection feature. If Conservation Mode is turned off and the AC adapter is added when the battery capacity drops from 100% but is still more than 95% (95% - 100%), the battery will not start charging. Have you tried turning off the Conservation Mode? This message indicates that Conservation Mode is turned on. What is the percentage of the battery when it says plugged in not charging? Let me help try to help you out on this one.