Owners of the Lenovo ThinkPad should check out their model on the Lenovo website to check if their laptop battery needs replacing. This issue affects the following ThinkPad models: T60, T61, R60, R61, X60 and X61 laptop series.
According to Lenovo, a limited number of ThinkPad users have reported the following symptoms:
Irreparable damage or battery cannot be charged error message from Power Manager or Message Centre, or
Low battery capacity, as indicated by short battery run time or sudden drops in the battery fuel gauge
Only the following ThinkPad Models and battery FRU part numbers are affected by this issue:
Source [Tech Fresh]
From my experience dealing with laptop battery users, one problem is the heat that laptops generate. If the design of the laptop causes excessive heat, this will eat up a battery quicker than anything. The battery and laptop are essential working partners.