Anyone reconcile the different instructions for batter calibration? Inside battery package is a business card that says drain below 10% then charge uninterrupted to 100%. That is completely different then above: “Calibrate your newly installed battery: charge it to 100%, and keep charging it for at least 2 more hours. Unplug and use it normally to drain the battery. When you see the low battery warning, save your work, and keep your laptop on until it goes to sleep due to low battery. Wait at least 5 hours, then charge your laptop uninterrupted to 100%.”