If we learned anything from the last Surface Pro we tore down, it's that the battery is a pain to remove, and it doesn't go back in quite the same.

So, we're gonna keep it glued in today...

This four-cell LiPo measures in at 45 Wh (7.57 V x 5940 mAh). That's a nearly 18% increase in battery capacity (and 100% increase in cell count) over the previous model.

To compare Apples to Apples Surfaces, the 10.5" iPad Pro we tore down last week sports a 30.8 Wh battery.