Surface Pro 2 with 8GB Ram and 256GB Storage. I made a video showing the drastic battery plunge. https://youtu.be/AdQovfjapH4 Windows 10 Upgraded from 8.1. I went back to 8.1 once to see if it was the update but it was the same so I went back to 10. Otherwise it’s a standard install. At this point it’s useless to travel with. I was considering the Pro 4 but the Pro 2 is only 3 years old and it makes no sense to spend this kind of money to have a non-replaceable battery die so quickly. Is there anything obvious that I’m missing here? Is this a common occurrence?