Ah nice to see that I am not the only one. This thread has been very useful, learning that it is a definite hardware problem where mine too doesn't detect battery 1 unless I apply pressure onto the back. I tried speaking to tech support but after all failed, they could only offer me an exchange for a device I had just under a year (excluding my first month where I had to get a replacement, so pushing me out of warranty). I would warn anyone exchanging as you only get an additional 3 months of warranty, not that I would expect anyone to.
Bottom line, I will try asking around any repair shops but I may just have to use it as a regular laptop and buy an iPad for all my note-taking. And there was me trying to be smart and get a 2-1 device to save the hassle of having separate devices.