Clara HD Battery Drain: Sleep cover? - Page 2

Scott479 · 09-22-2018, 07:55 AM

Quote:

Originally Posted by Mrs_Often

If I were you I'd test to find out if you have a bad book first. Otherwise, you'll end up with the same problem with the next device after all the trouble of exchanging.

How to I check for bad books?
I am having the same problem with the new device. Battery drains away even when not in the sleep cover and sleeping.

Mrs_Often · 09-22-2018, 11:46 AM

Quote:

Originally Posted by Scott479

How to I check for bad books?

I am having the same problem with the new device. Battery drains away even when not in the sleep cover and sleeping.

Remove all books (factory reset), and start with one free kepub from Kobo. Then add your books in small batches until you run into the problem. Then remove the last batch and add those books one by one (or in smaller batches).

Or just convert _all_ your books (ePub -> ePub) with Calibre. That should fix (a) bad book(s). You don't find out which book(s) were the culprit though.

Scott479 · 09-22-2018, 05:38 PM

Hmmm. That's sounds like a lot of work. I'm not sure any books I loaded on it are epubs. They are all pdf. I'm also pretty sure all of them were on my last Kobo and it ran with no problems.

Mrs_Often · 09-23-2018, 12:37 PM

Interesting. Any PDFs with very large file size? Maybe remove the largest ones or all the PDFs over a certain size.

Semwize · 09-23-2018, 01:12 PM

Quote:

Originally Posted by Scott479

They are all pdf.

If you are reading in Koreader, then the battery can be quickly discharged because of it.

Scott479 · 09-24-2018, 08:12 AM

Quote:

Originally Posted by Semwize

If you are reading in Koreader, then the battery can be quickly discharged because of it.

I don't know what Koreader is.

Scott479 · 09-24-2018, 08:32 AM

Quote:

Originally Posted by Mrs_Often

Interesting. Any PDFs with very large file size? Maybe remove the largest ones or all the PDFs over a certain size.

I had 6 over 10 MB, although like I said, all of these books worked on my Kobo Glo. Anyways, I have done a factory reset. I've just added one pdf book that I'm currently reading (plus the ones that the Reader added when synced to Kobo). I've also put it back in the Sleep Cover because that didn't seem t be the problem. We'll see what happens.

Mrs_Often · 09-25-2018, 02:46 AM

Quote:

Originally Posted by Scott479

I had 6 over 10 MB, although like I said, all of these books worked on my Kobo Glo. Anyways, I have done a factory reset. I've just added one pdf book that I'm currently reading (plus the ones that the Reader added when synced to Kobo). I've also put it back in the Sleep Cover because that didn't seem t be the problem. We'll see what happens.

Any improvements over night?

Also, this might be of interest:

Quote:

Originally Posted by jlemonde

So now I have disabled the automatic shut down a week ago or so, and most of the time it is fine (I loose less than 1-2 % a night), but it happened to me twice that I would loose much more, as for example 40% in a night. My theory is that my Kobo had a pdf file open those nights.

Can you confirm my doubts that the suspend mode with a pdf file open makes much more consumption, as if the device did not really enter a suspend mode excepted from the back-lighting which would turn off?

Scott479 · 09-25-2018, 01:38 PM

I just opened a pdf book and put it to sleep. Battery was at full. We'll see. I hope that is not the problem, because that is stupid.

Mrs_Often · 09-25-2018, 02:22 PM

Yep definitely stupid. But also probably fixable (after bug reporting to Kobo).

Scott479 · 09-28-2018, 08:28 AM

Kobo out of power today. I didn't check it yesterday, and it wasn't used. So it could be that a pdf left open drains the battery. I'll contact Kobo support again. Will try exiting the book before I put Clara to sleep.
This is frustrating.

Ken Maltby · 09-28-2018, 08:52 AM

KOReader. Installation on Kobo Devices.

Luck;
Ken

Mrs_Often · 09-28-2018, 01:48 PM

Quote:

Originally Posted by Scott479

Kobo out of power today. I didn't check it yesterday, and it wasn't used. So it could be that a pdf left open drains the battery. I'll contact Kobo support again. Will try exiting the book before I put Clara to sleep.
This is frustrating.

Yikes! I'm curious to hear if battery life is better if you close your PDFs! I can imagine this I'd rather frustration. However, if you really only or mostly read PDFs, it's probably a good idea to read them in KOReader as Ken suggests (even if the battery issue is solved!)

My battery life is still fine after leaving the one PDF I have open in sleep mode, so if the issue is PDF-in-memory related, it doesn't occur with _all_ PDFs.

Scott479 · 09-29-2018, 05:43 AM

I am unfamiliar with KOReader. Why would someone want to install it on their eReader?

Amon_Re · 09-29-2018, 08:25 AM

Quote:

Originally Posted by Scott479

I am unfamiliar with KOReader. Why would someone want to install it on their eReader?

For PDF's it's a massive improvement over the built in reader, for example it supports reflow while Kobo's native one doesn't. On the con side of things, as far as I know you need Kobo Start Menu and I'm not a fan of that. Would be great if you could integrate koreader with Nickel.

09-28-2018, 08:52 AM	#27
Ken Maltby Wizard Posts: 4,465 Karma: 6900052 Join Date: Dec 2009 Location: The Heart of Texas Device: Boox Note2, AuraHD, PDA,	KOReader. Installation on Kobo Devices. Luck; Ken Last edited by Ken Maltby; 09-28-2018 at 09:01 AM.

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09-22-2018, 05:38 PM	#18
Scott479 male homo sapien Posts: 24 Karma: 10 Join Date: Dec 2011 Location: Ontario, Canada Device: Kobo Glo, Kobo Clara HD	Hmmm. That's sounds like a lot of work. I'm not sure any books I loaded on it are epubs. They are all pdf. I'm also pretty sure all of them were on my last Kobo and it ran with no problems.

09-23-2018, 12:37 PM	#19
Mrs_Often Wizard Posts: 1,775 Karma: 2694823 Join Date: Dec 2011 Location: The Netherlands Device: Kobo Touch, Glo, Clara HD	Interesting. Any PDFs with very large file size? Maybe remove the largest ones or all the PDFs over a certain size.

09-25-2018, 01:38 PM	#24
Scott479 male homo sapien Posts: 24 Karma: 10 Join Date: Dec 2011 Location: Ontario, Canada Device: Kobo Glo, Kobo Clara HD	I just opened a pdf book and put it to sleep. Battery was at full. We'll see. I hope that is not the problem, because that is stupid.

09-25-2018, 02:22 PM	#25
Mrs_Often Wizard Posts: 1,775 Karma: 2694823 Join Date: Dec 2011 Location: The Netherlands Device: Kobo Touch, Glo, Clara HD	Yep definitely stupid. But also probably fixable (after bug reporting to Kobo).

09-28-2018, 08:28 AM	#26
Scott479 male homo sapien Posts: 24 Karma: 10 Join Date: Dec 2011 Location: Ontario, Canada Device: Kobo Glo, Kobo Clara HD	Kobo out of power today. I didn't check it yesterday, and it wasn't used. So it could be that a pdf left open drains the battery. I'll contact Kobo support again. Will try exiting the book before I put Clara to sleep. This is frustrating.

09-29-2018, 05:43 AM	#29
Scott479 male homo sapien Posts: 24 Karma: 10 Join Date: Dec 2011 Location: Ontario, Canada Device: Kobo Glo, Kobo Clara HD	I am unfamiliar with KOReader. Why would someone want to install it on their eReader?

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