Kobo aura h20 edition 2 doesn't hold charge

[Lima7]

Hey!

Update. I put my Kobo manually to sleep, and removed the books that I thought could be a problem and same happened.
From 92% to 0% in less than 8 hours. On sleep mode.

BUT I have a question. When I powered it back on, the comfort light was on. When I put my device to sleep though, the light was off. Could it be related ? I'm so hopeless and tired of this. Two new devices in a row �� I might just go ahead and exchange it for the Clara hd.

[DNSB]

Originally Posted by Lima7

Hey!

Update. I put my Kobo manually to sleep, and removed the books that I thought could be a problem and same happened.
From 92% to 0% in less than 8 hours. On sleep mode.

BUT I have a question. When I powered it back on, the comfort light was on. When I put my device to sleep though, the light was off. Could it be related ? I'm so hopeless and tired of this. Two new devices in a row �� I might just go ahead and exchange it for the Clara hd.

Was it in the sleepcover? If it was, was the cover closed or opened when this happened? Is the sleepcover the expensive Kobo version or an aftermarket sleep cover?

You might try fully charging your Kobo, removing it from it's sleepcover, doing a factory reset, select not to use WiFi and then leaving it overnight. This is more or less a let's see what happens.

I've never had the light turn on when it was off when the Kobo was powered off. The light level is recorded in the Kobo eReader.conf file and it should return to that level.

[mathil]

Originally Posted by Lima7

Hey!

Update. I put my Kobo manually to sleep, and removed the books that I thought could be a problem and same happened.
From 92% to 0% in less than 8 hours. On sleep mode.

BUT I have a question. When I powered it back on, the comfort light was on. When I put my device to sleep though, the light was off. Could it be related ? I'm so hopeless and tired of this. Two new devices in a row �� I might just go ahead and exchange it for the Clara hd.

Did you remember to turn the sleepcover option off in the settings? It's in the Energy Saving and Privacy area.

[Lima7]

Hey!

The Kobo was in the sleep cover which was closed. It's a cover bought on Alliexpress, not the official cover by Kobo.
Overnight this time I lost 6%.
Yea, I turned off the sleep cover option!

I will try your suggestion DNSB!

Thanks for the help everyone!

[Lima7]

Hey again,

Kobo customer's service suggested I do a factory reset (again), then charge it for 8 hours, and for a week, use only kepubs (I legit have none), and then, if that doesn't work, go to the store and switch it again. They say the battery has a memory, and it may have remembered the fault that was caused by possibly a faulty epub. But they don't know really. They have been so nice and helpful though! I just wish I could find what the problem is.

[koboy]

Originally Posted by Lima7

Hey again,

Kobo customer's service suggested I do a factory reset (again), then charge it for 8 hours, and for a week, use only kepubs (I legit have none), and then, if that doesn't work, go to the store and switch it again. They say the battery has a memory, and it may have remembered the fault that was caused by possibly a faulty epub. But they don't know really. They have been so nice and helpful though! I just wish I could find what the problem is.

you haven't mentioned in any of your numerous posts how many books you had on the previous device? and how many books you have on the replacement device? if i was having this problem i would put only 1 book on the device and see if it makes any positive difference.

best wishes koboy

[davidfor]

Originally Posted by Lima7

Kobo customer's service suggested I do a factory reset (again), then charge it for 8 hours, and for a week, use only kepubs (I legit have none), and then, if that doesn't work, go to the store and switch it again. They say the battery has a memory, and it may have remembered the fault that was caused by possibly a faulty epub. But they don't know really. They have been so nice and helpful though! I just wish I could find what the problem is.

Li-Ion batteries do not have a memory. The fuel gauge can need to be calibrated. But, that is really only to ensure the full and empty levels are correct. The only way to calibrate the fuel gauge is to use it. Fully charge it and run it down to empty two or three time.

Your problem does not sound like a calibration problem. It sounds like either a bad battery. Old or failing batteries will behave like this. They appear charge fully, but, as soon as you start using them, they drain a lot quicker.

The other possibility is something draining the battery. A runaway process would do this. The last reports make it sound like the sleep cover is causing the problem. We had a series of reports similar to this a while ago. Turned out the cover in use had something sticking out a bit that touched the screen when it was closed. This prevented the device from going to sleep and made it use lot of power. So, overnight, the battery was drained.

This shouldn't be the case with the Aura H2O2 as it has a capacitive screen. That would require a really badly designed screen that activated the touch. Or you putting it somewhere that did the same or triggered the cover sensor. At one point I kept finding my Glo awake when I didn't expect it. The problem was that I tended to sit it on my iPad, or in my backpack next to the iPad, and its cover triggered the sleep and wake.

The factory reset isn't a bad idea. That resets everything to a know state. Then you can add books and read. For the kepubs, Kobo has plenty of free books. Maybe you can find a few that you like the look of and read them.

[Lima7]

koboy: it's exactly what I did. The first one had not more than 20 books. The second one had 4. Down to 1 now

Davidfor: thanks for the answer. I wonder why Kobo told me something that is not true. As for the cover, it could've been the case but I am putting my kobo to sleep myself, as I turned off the auto wake/sleep. So it can't be the case now.

So, second device in a row with a bad battery? Could that be it? I would be very unlucky... what do you suggest? Exchange it again?

[DNSB]

[QUOTE=Lima7;3729219]Davidfor: thanks for the answer. I wonder why Kobo told me something that is not true. As for the cover, it could've been the case but I am putting my kobo to sleep myself, as I turned off the auto wake/sleep. So it can't be the case now. /QUOTE]

I still find quite a few people who don't realize that memory was an issue with NiCd batteries. The later NiMH batteries did not suffer from memory effects and while Li-ion batteries have some charge related issues where overcharging and letting the battery totally discharge are ungood, I find it hard to claim that is a memory effect.

[anacreon]

Would by any chance your bedside table or whatever you lay your reader on be metal? Though as far as I know that should have no impact if you turned the sleep function off.

[Mrs_Often]

Originally Posted by Lima7

As for the cover, it could've been the case but I am putting my kobo to sleep myself, as I turned off the auto wake/sleep. So it can't be the case now.

The issue isn't likely to be related to the auto sleep/wake function indeed, but davidfor describes something other than that related to the case (and so did I in one of the other threads you posted in). So you can't be sure it's not the case. Especially since it as an AliExpress thing. And I agree with you, two bad batteries in a row would be quite a coincidence. So apart from following the tips you've received (factory reset, full charge, read one free kepub with nothing else on the device), I would also take your device out of its case.

[Lima7]

Originally Posted by anacreon

Would by any chance your bedside table or whatever you lay your reader on be metal? Though as far as I know that should have no impact if you turned the sleep function off.

Actually yes it's totally a metal bedside table from IKEA!

As for the other suggestions I did the factory reset and everything so I will try now to take it out of the case and remove all epubs and I'll let you guys know !

It seems to be slightly better now. I had to charge it yesterday but I did the whole day (I read for 2-3h at night), the whole night it stayed on sleep mode and I just checked and in total I lost 20% (which is still a lot I think but I read a lot too yesterday with the light on so is that a normal battery drain considering this???)

Thank you for your help everyone! I appreciate it.

[John F]

Originally Posted by Lima7

...

As for the other suggestions I did the factory reset and everything so I will try now to take it out of the case and remove all epubs and I'll let you guys know !

...

Doesn't a factory reset remove all the books?

[Lima7]

Originally Posted by John F

Doesn't a factory reset remove all the books?

Yes it does. But I put back some of them after. Good point! So I'll try another factory reset then I guess

[davidfor]

Originally Posted by Lima7

Actually yes it's totally a metal bedside table from IKEA!

The question was asked because it is possible that metal is interfering with the sleep cover sensor. There have been some reports of the sleep cover not working when the device, especially the Aura ONE were put on a metal table.

As for the other suggestions I did the factory reset and everything so I will try now to take it out of the case and remove all epubs and I'll let you guys know !

It seems to be slightly better now. I had to charge it yesterday but I did the whole day (I read for 2-3h at night), the whole night it stayed on sleep mode and I just checked and in total I lost 20% (which is still a lot I think but I read a lot too yesterday with the light on so is that a normal battery drain considering this???)

Currently, Kobo claim the battery life as "weeks". Before, they were claiming 60 days of battery life for most of their devices, but 30 days for the Aura ONE. That was based on 30 minutes of reading per day. That works 30 hours and 15 hours of use. And 3 hours of reading is 5% and 10%. I don't know where the Aura H2O2 fits into this, but if you read for several hours plus the overnight sleep, 20% is high, but not absurdly high. If you have the opportunity to charge the device fully and let it sleep uninterrupted for a few hours, then you will get a better idea of how much battery life is used then. Same goes for a long reading session.