09-19-2012 05:43 PM
09-19-2012 05:53 PM
09-19-2012 06:16 PM
09-19-2012 07:26 PM
05-30-2017 08:56 AM
It was necessary with the old "dumb" batteries and the nimh/nicads. Modern lithium batteries do smart charging, which eliminates the need for calibration.
09-19-2012 10:03 PM
09-20-2012 05:39 PM
BatteryBar constantly monitors the status of your battery as you use your laptop. As it monitors your battery, it keeps historical data on your battery and provide you with a very accurate estimate of how much time is remaining on your battery.
I just use this http://osirisdevelopment.com/BatteryBar/
It does a good job on all the laptops so far.