Shack PC not charging

After being a bit worried, all is now well. To reduce noise I have been running the shack PC on its internal batteries when trying to receive on 136 and 472kHz. For some reason, the internal batteries refused to charge.

I left the PC on mains power and see it was part way through (yet another) Windows 10 update. This has now fully installed and the batteries seem to be charging OK now. So I put this mystery down to the (partial) update. Why does Windows 10 seem to have updates so often? I thought it was meant to be wonderful?

As the battery was so flat I cannot go on 136 or 472kHz until this evening.