Originally Posted by Shai-Hulud
Thanks for your thoughts. I'm not discounting malformed books, though testing thusfar doesn't seem to indicate this is the sole cause of power issues even in cases where we can't rule out a contribution.
I don't use the Kobo desktop software partly because there's no linux client, and partly because I consider it undesirable bloat. If others want random marketing media and updates pushed onto their device and their reading habits tracked, that's fine but it's not for me I'm afraid. I wonder how many people actually load it on their machines because Kobo tell them it's needed to get their device initialised? Whatever. I do understand the convenience it affords non-technical people. I happen to think calibre is a far superior product, concentrating on the basics like functionality and user experience, and is a genuinely useful piece of software (please support Kovid with some £££ if you also use it and like it).
Regardless of personal opinions, my method for setting up and usage is consistent across the old Touch (good battery life) and the new Touch (bad battery life x 2). Consequently I believe that creating a fresh account is barking up the wrong tree (though if anyone experiencing power issues wants to go ahead and do that and post back, I shan't dissuade them). Different user entries in text fields in the database by themselves cannot have any bearing on how much power a device uses since it's analogous to changing a sticker on the bumper of your car:- the car still drives the same whether you declare "I love Horses" or "Let's turn them into Burgers"
If you're avoiding firmware updates, I see why you don't want to create a test account.
I wasn't suggesting using the kobo desktop app...don't use it myself for the same reason.
My idea was more that somehow a "clean" account would be easier and more reliable for not involving other factors when testing.
I understand if you'd rather not, it's just I would personally find having to return so many units quite annoying and would be looking for other factors as well.