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#16 | |
Junior Member
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Karma: 11514
Join Date: Aug 2013
Device: Kobo glo
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Quote:
I charged it up to full the other day, and then left it sitting, face up in standby. It had dropped about 30% in 48 hours with no interaction (don't remember the exact number, unfortunately). Reading the replies, it seems to be a rare but real problem. It sounds like their response is pretty consistent as well. Ultimately, though, as far as problems go, I suppose it's really not that big a deal to have another device that needs to be charged every couple of days. |
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#17 | |
Guru
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Karma: 3026110
Join Date: Dec 2008
Location: Lancashire, U.K.
Device: BeBook 1, BeBook Pure, Kobo Glo, (and HD),Energy Sistem EReader Pro +
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BobC |
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#18 | |
Grand Sorcerer
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Karma: 70880793
Join Date: Feb 2009
Device: Kobo Clara 2E
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#19 | |
Member
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Karma: 23018
Join Date: Aug 2013
Device: NST Glowlight
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Quote:
http://merch.kobobooks.com/magento/u...ranty_caus.pdf Page 3 specifically lists batteries as consumable parts, not covered under warranty. |
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#20 |
Junior Member
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Karma: 11514
Join Date: Aug 2013
Device: Kobo glo
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Actually, scratch that -- it went down to 0 (or at least the out-of-battery screen) in 72 hours, sitting face up, with no use.
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#21 |
Tenrec
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Karma: 1076988
Join Date: Oct 2012
Device: Kobo Aura One, Kobo Glo
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#22 | |
Wizard
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Karma: 3212428
Join Date: Jun 2011
Device: iphone stanza, kobo touch,ASUS TF300,KOBO GLO, Kobo Aura HD, Kobo Mini
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Quote:
of use from fully charged, to fully discharged, and fully recharged again. Use a two to three year life expectancy for batteries that do not run through complete charge cycles. Rechargeable Lithium-Ion batteries have a limited life and will gradually lose their capacity to hold a charge. This loss of capacity (aging) is irreversible. As the battery loses capacity, the length of time it will power the product (run time) decreases. So should be longer if there is a few weeks in between charges. Edited to reflect corrected information Last edited by jackastor; 10-01-2013 at 04:11 PM. Reason: correction of charge cycles |
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#23 |
GranPohbah-Fezzes r cool!
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Karma: 3151024
Join Date: Jul 2010
Device: Nook STRs, Kobo Touch, Kobo Glo
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Sounds like it's not really going into standby... or, put another way, something is running in the background. I'd make sure I carefully blew out the area where the bezel overhangs the screen in case it is similar to the cover getting in the way of the IR problem...
Have you tried doing a pinhole reset, signing out & back in, or a factory reset? I'll bet the battery is not the problem. I'd dump every book out/do the factory reset, put nothing on the reader and try that power test again. Last resort short of returning it to kobo. If it lasts longer I'd carefully add books back to see if one of them is not processing correctly and running the thing down. If it's not a year old, it's still in warranty, and dead from 3 days in standby is a warranty issue, not expected performance. Don't take "No", for an answer. Last edited by TechniSol; 09-30-2013 at 09:35 PM. |
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#24 | |
Addict
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Karma: 115140
Join Date: Sep 2012
Device: HTC One, Galaxy Note 10.1, Kobo Aura
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Quote:
But with the frequency of charging an e-reader normally sees we'ree still talking about years of use without any huge impact on performance and would be almost impossible to get that bad of a performance. Also the reason batteries enter into the consumables category is because they do have a limited lifespan based on usage. It can still be faulty though and should enter under warranty if it's obviously disfunctional. You can also argue that if it's dropping that much in standby it is not actually a problem with the battery but rather the device which isn't properly powering down while in standby and is therefore warranty covered issue. |
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#25 | |
Member
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Karma: 23018
Join Date: Aug 2013
Device: NST Glowlight
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Quote:
To troubleshoot mine, I did factory factory reset, and only added the book I was reading. While I suppose it is possible the epub is somehow corrupted, I don't find that to be a reasonable assumption at this point. From my fully charging over the weekend, I am down to 51% battery, with a reading time of less than approximately an hour, and 3 days/nights in "sleep" mode. That's simply not acceptable, and I am going not going to take no from tech support on getting a new one. I believe any decent retailer should have no problems simply exchanging a device at this point. |
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#26 |
Junior Member
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Karma: 11514
Join Date: Aug 2013
Device: Kobo glo
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If possible, please do post about your experiences with customer service.
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#27 |
GranPohbah-Fezzes r cool!
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Karma: 3151024
Join Date: Jul 2010
Device: Nook STRs, Kobo Touch, Kobo Glo
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I'm not one for guessing when it's important, but I suppose if pressed I'd guess that a kepub from Kobo might be more reliable if you're just going to load one book on to test further after a reset/factory reset, etc. than a random epub.
That said, if I still had negative results I'd still reset again and try another, just in case. I really do think a full factory reset/restore to original firmware might be required if it's a firmware problem. Or maybe you could get away with side loading a firmware? You know checksums are a pretty good way to make sure firmware isn't corrupted, etc., but they are not absolute. You, lucky you, could be the one in a gazillion... (It'd never happen with a lottery ticket, but then I don't buy them!) Last edited by TechniSol; 10-01-2013 at 03:51 PM. Reason: B'cuz |
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#28 | |
Wizard
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Karma: 3212428
Join Date: Jun 2011
Device: iphone stanza, kobo touch,ASUS TF300,KOBO GLO, Kobo Aura HD, Kobo Mini
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#29 |
GranPohbah-Fezzes r cool!
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Karma: 3151024
Join Date: Jul 2010
Device: Nook STRs, Kobo Touch, Kobo Glo
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For the last few years most Lithium batteries have been rated for 500+ discharge/recharge cycles. The thing is that to get the "+" part mostly requires shallower discharge cycles and recharge cycles slow enough to limit heating to a minimum. Now, that's not to say your battery will only last 500 cycles, or that capacity will remain anywhere near 100%, but as low as 80% usually makes very little difference for most applications... With shallower discharges one might get nearer 1000 cycles, but overall still probably only ever draw the same amount of power, or a bit more, from the battery over time.
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#30 |
Zealot
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Karma: 609066
Join Date: Sep 2013
Location: Melbourne Australia
Device: Kobo Glo, Kindle Paperwhite, Kindle Voyage
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I have the light on 1% and I'd like it to be dimmer. However, I'm happy with the battery life, and this probably helps.
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