Lenovo is recalling batteries from its ThinkPad line of laptops, warning users that some batteries may be permanently damaged due to certain errors.

The company is offering free replacements for batteries that do not recharge or suffer from "irreparable damage," according to Lenovo's support Web site.

Users need to run a diagnostics tool to see if batteries show any of those symptoms. The tool can be downloaded from Lenovo's support site. If it indicates the battery is either damaged, shows sudden drops in the fuel gauge or fails to recharge, then the battery may need to be replaced.

Eligibility for a free replacement also depends on the laptop model and specific battery installed. Only a limited number of ThinkPad batteries qualify for a free replacement, the company said on its support site. The recall applies to worldwide customers.

Full story: InfoWorld