This vivobook is having a battery drain issue. Battery percentage from 70 to 30 drain very fast. My experience about this vivobook is very bad I baught this vivobook 3months ago and I think that I totally waste my money on it. I have field based job and my all work is done on this vivobook that why I purchased it. But due to its battery drain issue I am unable to do my work. I visit the service station for this issue once they repair it now their is wifi and bluetooth issue. Worst product and service too.