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Old 02-12-2015, 04:46 PM   #1
snotty
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Device: kobo aura hd
power depleted using coolreader from pbchess-1.2.6.42

Hello All,

First a big thanks to all the wonderful folks here providing knowledge and support! It helped me enjoy my ereading enormously.

As I have not encountered a similar issue in these forums I posted it in dev corner. If it is out of place; feel free to move it.

Three days ago I wanted to charge my, low on power, Aura HD while using Coolreader from the pbchess package.
I remembered it does not charge while coolreader/pbchess is active so I thought I pressed the reboot-button on the screen.

Then it happend; it went to the screensaver (rpm-gauge) and it has not come out of it. I had it on a charger ever since (two days)

At first I searched the forums. None of the common procedures worked.
1) press the reset-button at the bottom.
2) hold the power-slide for over 20 sec. then press the light-switch and hold the power switch.
3) same procedure as with 2) and repeatingly switching the power switch.
4) more exotic combinations: hold light and power switch for over 20sec.; hold reset-switch and light-switch; hold reset switch and power switch.
[edit] just found the link on depleted battery and succesful reset using light and power switch together; did not work for me either:
http://www.mobileread.com/forums/sho...d.php?t=232517
[/edit]

Assuming here : It is out of power and the charging logic of the board/reader has no power to control the charging thus it is unable to charge. Even though the charger is connected.
"Normal" devices ie. my tablet, phone, have a "trickle charge" function. So it charges very very slowly but you are able to get out of this situation. But it seems it is not doing that either.

The question:
1) Did I miss something? If so; please help!
2) If my assuming is correct; can somebody point out to me how I can bypass the charging logic and get some charge in the battery.

I'm hoping that I missed something; If not I will open the device, but I rather not.

Thank you in advance.
And again a big thank you for the help I've already gotten!

Last edited by snotty; 02-12-2015 at 04:53 PM. Reason: Update on link found/adding missing info
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Old 02-12-2015, 09:07 PM   #2
Ken Maltby
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Device: JetBook Lite, AuraHD, PDA, Eee Transformer
Just holding the power slider button all the way to the right while counting to 20 should insure that the AuraHD shuts down. If you are using the Kobo Start Menu (KSM) you can use the "Tools">"checkbatteryautorefresh.sh" to monitor the device's charging.

If the battery is too low, you may need to try switching between different charging sources, say your computer and a wall charger. The charging circuit may reset its parameters. Then you should leave it charging overnight. There is no Trickle Charging Li-ion batteries. There is no overcharging, by leaving it on the charger.

Luck;
Ken
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Old 02-16-2015, 04:10 PM   #3
snotty
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Join Date: May 2014
Device: kobo aura hd
Hi Ken,

Thank you for your prompt response! I've left the device on a charger for 3 days while I was away. Still nothing.

You are right on the trickle charging. This is not what I meant; sorry for the confusion.
I've had a Archos G9 80 tablet that seemed depleted at one point. After you let it stay on a charger for more than a day, the battery would be charged enough for it to boot. So it would charge; only very slowly. When shutting down the device it warns you it will not charge when shutdown. The tablet I have now has some basic charging logic where it pictures a battery on screen that "charges".

- While using Coolreader to read my books I noticed the device does not charge when I plugged in the charger; this made me restart the device into Nickle to have it charge.
- Now it has depleted while using Coolreader. I am afraid that there is no more charge left for the device to operate any logic and thus is not able to charge.

The past 3 days I've thought about it and I've decided to open the device up and get the battery charged externally or hook up an external battery.

Again, Thank you for your contributions on these forums!
Will let you know how this ends; hopefully not in tears ;-)
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