Unexpected battery charge levels - ThinkPad Helix

TITLE:
Unexpected battery charge levels - ThinkPad Helix

SYMPTOM:
The user may experience one of the following symptoms:

· The battery may unexpectedly stop charging at 50 percent,
even though Battery Health Mode is set to “Always fully charge”.
· The battery may unexpectedly charge to 100 percent, even
though the Battery Health Mode is set to “Automatically optimize for
battery life”.

AFFECTED CONFIGURATIONS:
ThinkPad

AFFECTED SYSTEMS:
Helix

OPERATING SYSTEMS:
Microsoft Windows 8

LIMITATIONS:
Lenovo has confirmed that this is an issue with the Lenovo Settings application.

SOLUTION:
None.

WORKAROUND:
Attach the Tablet to the keyboard base, then toggle the Battery Health Mode setting inside the Power section of Lenovo Settings. This will cause the desired setting to be applied to both the Tablet and keyboard dock batteries.

ADDITIONAL INFORMATION:
Battery Health Mode is a setting inside the Power section of the Lenovo Settings application. When it is set to “Automatically optimize for battery life”, it means the battery will only charge to 50 percent. When it is set to “Always fully charge”, it means the battery will charge to 100 percent. ThinkPad Helix has two batteries (one inside the Tablet and one inside the keyboard dock).

An issue occurs when the Battery Health Mode setting is changed while the Tablet is undocked. In this case, the new setting is applied only to the Tablet battery and not the keyboard dock battery. To avoid this issue, change the Battery Health Mode setting only while the Tablet is docked.