[Zaroff]

I'll clarify:

The 10% drop is what happened to many, i.e. starting to use the device and reading and, a few minutes later, dropping 10% battery level. When I say a few minutes, it's five, max. And that indeed does remain with 4.1.7729. As well as the bug regarding the auto sleep, but that's another story, I could live with that.

David: yes, you understood correctly, see above.

I've read in some other thread that it's to be "expected" since it's part of battery calibration. Really? I've owned many more portable/rechargeable devices than I care to remember, from cellphones to laptops to iThings to DAPs etc, and I've never met some such battery "conditioning". I'm not entirely certain Kobo designed such a new way to implement/measure battery capacity that this would normally be needed. Unless they want to make a flaw pass for a feature.

At the end of the day, owing to the screen/battery cocktail, that's 2 failing units out of 2. That computes to 100% lemon. 100% dud.

I maintain KA1 wasn't fit for release so soon. Stubborn facts demonstrate it.

P.S.: I should also note that all the above happened with, very probably, two different batches, since the reseller went out of stock between my first and second unit. So there's that.