my battery is 2 years old.Before callibration the backup was more than 2 hrs but suddenly after the callibration this message occured and backup reduced to 30 minutes.But still when checking battery health with HP support assistant the health is good.
OS- windows 7 home premium
Callibration process how i carried-
First of all i charged the battery to 100% and then unplug the adapter from laptop, after that i used the laptop until it got switched off and after it was off, i kept the power button of laptop pressed for drainage of left battery power and then i removed the battery from laptop and again pressed the power button for few seconds. After 5 minutes i plugged the charger and i switch on the laptop.


After this message i callibrated again to resolve the problem but still problem resisted .