Re-calibrate Toshiba battery meter with Windows 7

Solution 1:

You can try and remove the battery and turn the laptop on using the AC/DC adapter only. Then turn the laptop off, re-insert the battery and turn the laptop back on using battery power only and no charger plugged in. This may reset the system automatically so the laptop will read the correct amount of battery charge. Then fully charge the battery with charger. Once fully charged, remove the charger and let the battery drain on its own. Fully charge the battery and now see if it got right!

You could also check here.

Solution 2:

I would contemplate contacting Toshiba for Technical support:

http://eu.computers.toshiba-europe.com/innovation/contact_toshiba.jsp

They should be able to provide you with the best advice regarding your laptop's situation.

If and when the situation is resolved I would install BatteryCare on your laptop, it is a software created to optimize the usage and performance of the modern laptop's battery

It monitors the battery's discharge cycles and helps increasing it's autonomy and improving its lifetime.

More information about it can be found here including contact info of the developer:

http://batterycare.net/en/index.html