@gbraad I have it only since a big month, i'm rarely using.
So far, still the same battery. I'm also curious about the lifetime of them .
i travel with a spare one in case of.
Yes EMR tech is the holy grail of digitiser, on samsung laptop and wacoms (and few other, an acer, etc) have it. But too hard to find one supported on Gnu/Linux and it was my priority.
Bamboo ink first gen.
The only downside of this pen is 4A battery. I tried to find rechargeable one in my local market but without success.
I also use one for math at collage with Dell Latitude 7390 2 in 1. (Of course on GNU/Linux with xournal++) Actually this pen supports not only AES 1.0 but also some M$ protocol you can switch by holding two buttons.
Finding information about protocol support in both digitizers and stylus was hard...