Hi guys, I installed win 8.1 a few days ago on my 2013 macbook air 11inch. It was hard, but I finally got it working. However, battery life seems really short. It drops really quickly compared to os x. I could get about 11 hours doing regular stuff like web browsing, html5 youtube, etc. With win 8.1, I think it's lasting about 4 to 5 hours. I can see the battery percent dropping really fast. Is this normal for 11inch macbook air 2013? Or is there any way to save it? As I was typing this, I uplugged my charger to test again, and within 1 minute, battery percentage dropped from 100 to 99.. I really need help. Thanks.