From the Lenovo forums, it would appear that you need to "recondition" the battery. This basically resets the battery, or rather the percentage of charge left indicator.
Start up Power Manager. Select the 'BATTERY' tab. Then select the 'Battery Maintenance...' tab. At this point select the 'Perform Reset...' tab.
Or... from another site regarding Lenovo laptops and battery "reconditioning"...
Search your laptop's Control Panel or Start Menu for the Power Management software. To recondition your battery on Lenovo laptops, click on the "Battery Maintenance" button on the Battery Information tab of the Power Manager. Before proceeding, make sure your laptop can be left unused and plugged into AC power for 4-5 hours. Then click on the "Perform Reset" button. You will be notified when the recondition is complete.
So, in other words... Yes. You should use "battery gauge reset".
Of course, knowing how old the laptop is, and how old the battery is might make a difference... like between recommending reconditioning or getting a new battery.