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Old 10-07-2016, 08:25 PM   #241
davidfor
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Originally Posted by hkckoo View Post
yeah, one would guess so. watch this, unberable, this was my second charging cycle. first time I let it charge for 4 hours, as advised in the manual. second time until KSM said it was completely full. the same thing happens also in nickel, its not just koreader

https://youtu.be/3MTPcWwMlyY
I'm not sure if what you are showing there isn't expected. When reading, the power is used when turning the page. Nearly all the CPU and IO is done while rendering and displaying the page. Then, it effectively sleeps while you read the page. If it took you a minute to read the page, then the number of page turns in that video would take a lot longer, and the battery level drop would be roughly the same but wouldn't seem to be as bad.

The same thing happens if you spend a lot of time looking through the library on the device. Just scrolling through a long list of books uses a lot of CPU and can use a lot of battery power.
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Old 10-08-2016, 09:38 AM   #242
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yeah, of course you dont notice the drain as much when you are actually reading what is on the screen and not just flipping through pages, but come on.. this cant be a normal thing, 30% battery loss after 20min? that is ridiculous. I also tried reading a comic and after 30min 10% of battery was gone. brightness was at 0, wifi turned off.
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Old 10-08-2016, 10:45 AM   #243
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In a perfect world, yes it would have a longer battery life. But they shrunk the battery and with comics on the bigger screen/higher res it's probably a lot more battery power to process it all (likely more complex that type on a page) so I can't say I'm really surprised at the shorter life.
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Old 10-09-2016, 03:08 PM   #244
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Unhappy

This has been such a pitiful experience in my eyes. I basically have to charge my device once per day as it mysteriously loses the majority of the battery at some point. Sync is disabled via the config file and WiFi is off but this has done nothing for my experience. I'm not going to go through the possible work-a-round of configuring myself w/o WiFi in hopes that it alleviates this.

What about all the non-MobileRead users / modifiers. What are they doing?

My original ticket from Kobo provided a RMA which they then pulled stating that they'd release a firmware update on the 26th. I emailed them on the 27th asking where the patch was and they responded that it would be delayed until the 3rd. Ok, I'll wait.

On the 7th I sent an email asking as to the status of the patch and said that if it wasn't imminent that I wanted to proceed with my RMA.

Their response? They marked the ticket as solved and closed it.

I really want to love this device but it's basically unusable unless I plan to read with the charger connected as it's always dead when I want to use it.
Kobo's support has been lackluster at best.

Frustrated...
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Old 10-09-2016, 03:23 PM   #245
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Battery life on my device has so far been decent (20-22 hours, light at 5%, wifi and sync off). There's just one issue. At least once per charge, usually twice, the battery drops ~10% in a matter of seconds/minutes. Just now for example I woke my KA1 from sleep and the battery was at 45%. 30 seconds later it was at 35%.

Last edited by JoOrwick; 10-09-2016 at 03:25 PM.
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Old 10-09-2016, 04:29 PM   #246
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Agreed with the two above posts.

I heard the naysayers talking down those who are impatient for that firmware to be released, but frankly? Releasing what is poised to be their premium device with such a crappy firmware, filled with bugs to the hilt, and keeping pushing the correctives further and further away instead of making two passes, one that would correct the most pressing bugs, and a second one later on correcting minor and/or cosmetic stuff, is totally idiotic, and a slap in the face of earlier buyers (because yeah, we BUY those things, lest they forget).

Kobo is pulling our collective leg, period.
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Old 10-09-2016, 06:51 PM   #247
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Quote:
Originally Posted by JoOrwick View Post
Battery life on my device has so far been decent (20-22 hours, light at 5%, wifi and sync off). There's just one issue. At least once per charge, usually twice, the battery drops ~10% in a matter of seconds/minutes. Just now for example I woke my KA1 from sleep and the battery was at 45%. 30 seconds later it was at 35%.
Was it at 45% when it went to sleep? I don't know when the battery level is checked, but there is a fair chance it isn't check and update immediately after waking. Or it is doing multiple checks to get the right level. So, I wouldn't be surprised if the battery level wasn't updated for 30 seconds or so after waking.

If I'm right, that does suggest the battery level dropped 10% while the device was sleeping. That is bad, but hopefully the coming firmware update will solve that. And my only prediction on when that will happen is: Not today, Monday 10th October. It's a public holiday in Canada.
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Old 10-10-2016, 01:50 AM   #248
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I must admit, in order to avoid the power issues, I've disabled auto sync and enabled auto power off after an hour just in case. Can't wait for the firmware to save waiting for the (not too bad) boot times.
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Old 10-10-2016, 12:11 PM   #249
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Ugh, another victim of the battery drainage problem here.

After being on team 'actual book' for the longest time, I decided it was time to no longer carry heavy 800+ pages books around. The KA1 seemed absolutely perfect, and in many ways it is. But, same as most here the battery of my device drops between 5-10% every hour (no wifi, no auto-light, no sync). I understand the battery will not last the advertised 30 days when using the device for a couple of hours every day, but this is pretty ridiculous. As not everyone seems to be experiencing this problem, would it make sense to return the device and get one from a later/other batch or should I 'patiently' wait this one out? I have some additional things that kinda annoy me but as a first time user I'm not sure if this is standard or if my device has been hit on the head a bit too hard, so could anyone tell me if the following things are normal? (sorry not 100% on topic, but i wasn't able to find anything about this anywhere and the answers will help me decide whether to return the device or not )
- when auto-light is on, the percentage of light will often go from 8 to 9 to 10 to 11, and back again in a couple of seconds. Even when the light in the room is stable and my KA1 is laying on a flat surface. This is actually the initial reason why I turned the auto-light off.
- Even though you do not need to do a tremendous amount of typing on an e-reader, if I do have to type something the letters will only appear about 1.5-2 seconds after I've typed them. Is this delay normal?
- when switching from a book to the main menu (or vice versa), the pages seem to very quickly alternate a couple of times before I get to the page I want to go to. This seems a bit buggy, but maybe it's a feature?

Thanks all!
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Old 10-10-2016, 12:25 PM   #250
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Quote:
Originally Posted by Roro-shi View Post
Ugh, another victim of the battery drainage problem here.

After being on team 'actual book' for the longest time, I decided it was time to no longer carry heavy 800+ pages books around. The KA1 seemed absolutely perfect, and in many ways it is. But, same as most here the battery of my device drops between 5-10% every hour (no wifi, no auto-light, no sync). I understand the battery will not last the advertised 30 days when using the device for a couple of hours every day, but this is pretty ridiculous.
The advertised battery life is 15h (1 month at 30m a day), so a drain of somewhat more than 5% in an hour's reading is actually what you'd expect. That's different to the battery drain issue, in which people are finding that the battery drains flat when the device is not in use. So I don't think you actually do have a problem.
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Old 10-10-2016, 06:35 PM   #251
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The battery concerns me. I mentioned issues last week. As it happens I had to reset mine last night - Windows kept chucking up USB errors. I'd put that down to Win10 but my work laptop, a Win7 machine, did the same.

By the time I'd done the reset, the restore, and copied some books back it was up to 100% again. That was about midnight. I read for about 20 minutes in bed. This morning at 7.30 am it was at about 80%.

After a train journey and some reading tonight - a total of, at most, 2 hours' reading, I'm now at 47%.

That's a devastatingly poor battery life. Software issues or not, this is a factory-reset device used mostly in daylight with no backlighting. This suggests two, at most three, days practical use: maybe five or six hours of reading.

I love the screen size and the waterproofing; I appreciate the benefits of the adaptive backlight and night reading modes, but a device with a weak battery is of no use whatsoever. I adore Pocket integration (that's a huge plus) and wish they'd bring back some of the games (sudoku, anyone, surely bookworms don't mind a blast of sudoku?) but a flat ereader is a dead ereader.

This fashion for lighter, slimmer devices at the expense of shorter, deader batteries really has to come to an end.

That, combined with a failure to mount in Windows necessitating a factory reset, means I've lost faith in this particular gadget right now. It will probably get better: I love my Glo HD but I didn't get mine til it was a mature device. The same may - hopefully, will - apply to the Aura One.

With regret I'll return to the smaller screen. It lacks the nicer newer stuff but at least it will probably have charge in the morning.

Last edited by astromark; 10-10-2016 at 06:40 PM.
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Old 10-10-2016, 08:45 PM   #252
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Mine is terrible too. Since October 6th, I've had it fully die on me in sleep mode. It loses 70% randomly here and there when not in use. No auto sync and no wifi.

Also, those white pin prick dots popping up. I want to exchange, but best buy in store is all out of stock.
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Old 10-11-2016, 09:15 AM   #253
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Quote:
Originally Posted by HarryT View Post
The advertised battery life is 15h (1 month at 30m a day), so a drain of somewhat more than 5% in an hour's reading is actually what you'd expect. That's different to the battery drain issue, in which people are finding that the battery drains flat when the device is not in use. So I don't think you actually do have a problem.
Losing around 10% of battery per hour and not having the battery issue...that's even worse than I thought
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Old 10-11-2016, 09:23 AM   #254
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I've recharged my Aura ONE yesterday morning. It has been idle for 24 hours after taking it from the charger, and when checking it, it didn't loose any battery power. It was still at 100%.

(I haven't been using my Aura ONE lately, as I don't have a lot of time to read at home; therefore I read on my KPW1 in public transport until I get a case for the KA1.)
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Old 10-11-2016, 12:03 PM   #255
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Quote:
Originally Posted by HarryT View Post
The advertised battery life is 15h (1 month at 30m a day), so a drain of somewhat more than 5% in an hour's reading is actually what you'd expect. That's different to the battery drain issue, in which people are finding that the battery drains flat when the device is not in use. So I don't think you actually do have a problem.
I totally disagree.
From my experience, one or two months battery life should be very far from such visible discharge. During my test on H2O the discharge rate was close to 1%/hour and the total reading time exceed the double of the theoretical 30 hours (2 months × 30 minutes).
See here:
https://www.mobileread.com/forums/sho...d.php?t=275804

The 15 hours is totally misleading and should only occur when reading 30 minutes per day — with battery drain caused by ~4 weeks of standby.
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