I just read an article which said that most of the batteries in the Surface Book are in the base. Which makes sense. It's why the Surface Book display is lighter and thinner than the Surface Pro 4 despite being larger.
But as a result, when being used just as a tablet, the estimate is around 3 hours instead of 12 hours. :-(
But as a result, when being used just as a tablet, the estimate is around 3 hours instead of 12 hours. :-(