Thread: Aura E2 battery drains when e-reader is in sleep mode
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Old 05-07-2020, 09:23 PM   #20
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 matt0 View Post
The latest news after having removed all the books is that the sitation looks even worst than before...the battery charge decreased from 43% to 12% after 24 hours with the e-reader in standby.
Firstly, I agree with @NiLuJe. Use the battery level as a guide rather than gospel. And don't assume it is linear.

What was the state of the device? Sleeping or powered off? If it is sleeping, try a test. Charge the device completely, power off and on and put it to sleep. That should make sure there are no left over background tasks consuming power. Then put it away for 24 hours and look at the battery levels after that.

If you are turning it off, I would charge it, restart and turn it off for the test. Again, that is about making sure everything was "normal" at the start. And the point where the powered off screen is displayed is a little bit before the device finishes powering off. If there is a hung task, that could prevent the final power off, or delay it a lot longer than usual.

You can also turn on the developers mode and the power management logging options. That can show why the device is waking or not sleeping. I have used that to understand problems like this before.
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