Thread: Kobo Battery problem
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Old 01-07-2022, 08:01 PM   #12
davidfor
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Posts: 24,905
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Join Date: Jul 2011
Location: Sydney, Australia
Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
Quote:
Originally Posted by porphyry5 View Post
I have similar problem with Clara. Acts normally from 100% down to ~82%. Next time I turn it on its fully discharged, 1% only left.

I wonder if the battery doesn't contain 5 cells, of which only one is still good, because it charges from 0-100% now in about an hour, much faster than it used to. Mostly I'm hoping it gives up completely while its still under warranty, 3 months to go.
The battery is a single cell. From my experience, the discharge rate of Li-Ion cells is not linear. But, it shouldn't be that bad.

The real question is whether something is happening to use the battery while sleeping. I can state that my Clara HD does not do that. But, I have had some issues with syncing on it recently that have meant the sync runs for a long time and frequently doesn't complete. And that drains the battery. Plus doesn't let it sleep properly. Something like that would explain battery drain like you are reporting.

There have been other issues over the years related to problems with the reading part of the app that can be triggered by problems in some books. In those cases, something is left running when the book is closed and quickly uses a lot of battery. Restarting the device will kill the rogue process and the battery usage returns to normal. If you see this happen after a particular book, we can look at it to work out what is wrong. We may be able to fix the problem in the book and the problem will go away. And you can report the issue to Kobo so they can fix it from their end.
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