[header] How to fully discharge a laptop battery [title] Disable hibernation on your computer temporarily. [step] This will allow your battery to drain fully. [title] Select the power meter icon on the taskbar, or select start] control panel] performance and maintenance] power options] power schemes [title] Write down the three settings in the plugged in column and the settings in the running on batteries column, so you can reset them after calibration. 
[title] Select the drop-down lists and set all six options in both columns to " never. [step] " [title] Select the " ok " button.