A lot of good info. Thanks for the tips.
I found the
pics of internals
Seems the battery is very easy to access and should be easy to replace. Even the mod to replace with AAs should be easy. I feel much better on that account. Of course, the e-ink tek is new, so hard to tell at this point how durable it is. Anyway I may reconsider and purchase one, after software update to fix PDF rendering and lack of folders.
Again thanks for the info