Hi, the battery on my new Surface Pro 6 seems to drain quite quickly. This was only recently purchased and I need to carry a power cable around with me to work. I try to bring my screen brightness all the way down, but it still drains very quickly. See the steep battery drain in image attached. The work I am doing don't drain power too much, taking notes in OneNote or editing word or PowerPoint documents. Is this normal? For example, over a 2.5 hour usage, battery dropped 36%.