Thread: Glo Bad battery?
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Old 01-28-2013, 03:34 AM   #86
Mrs_Often
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Posts: 1,310
Karma: 1495609
Join Date: Dec 2011
Location: The Netherlands
Device: Kobo Touch, Kobo Glo
Quote:
Originally Posted by murg View Post
From memory:

Kobo uses Freestyle processors in the devices, and these processors are basically system-on-a-chips, which means that the CPU and the memory are on the same chip.

The chip may be smart enough to be able to turn off portions of memory that aren't being used, but there isn't that much memory, and stuff tends to get written to semi-random memory locations, so I'd say that all of memory is either on or off.

During sleep mode, memory will be in a sleep mode, where only enough power to refesh it is consumed. When the appropriate hardware trigger (power button toggle) happens, then the processor and memory are awakened, and the device is back in business.
Ah good to know.

Quote:
Originally Posted by murg View Post
Having recently taken a long aeroplane trip, my Glo stayed on 100% for about 6 hours of lighted reading, and then dropped about 2% for every 2-3 hours after that, with non-reading periods being in sleep mode.
I want that!
I know I'm getting a replacement Glo, but looking at VelvetElivs' experience... sounds like there's lots of bad batteried Glo's out there

Quote:
Originally Posted by jusmee View Post
All of which means power usage should not be book or book-size related.
Yes. And if that's true, I could have known from the beginning my Glo's battery was crap.

Quote:
Originally Posted by moffattm View Post
I can understand poorly formatted ebooks (i.e. books that have all their chapters in one huge file instead of splitting into multiple smaller files) having an affect on the processor (i.e. making the processor work harder by having more data to shunt around), but this should only be while you're opening or reading the book, not while the device is asleep. Do you agree?
That would seem logical, yes, assuming all the above is indeed correct. Perhaps it only seemed like a larger battery drop in sleep mode because the battery meter caught up with the battery that had actually lost the power during reading?

Quote:
Originally Posted by Namekuseijin View Post
well, well, my 2 cents as a possible buyer for a Glo:

1) I'm lucky I don't travel as much like you guys to distant savage lands and live in a house with electrical system so I can charge it every week or perhaps even daily if it's that bad
Of course, it's not all that dramatic. But still, if I get a device that wants charging every 5 days while I should at least get 14-30 days out of it, I'm not happy. I don't want to have to worry about making sure it's charged enough. I just want to use it.

Quote:
Originally Posted by Namekuseijin View Post
2) I'm not amused that a lit screen draws more power than a non-lit one
Not amused? You mean you expect a light source to not use any battery? Of course it uses battery. The question is exactly how much it uses... Kobo warned me after my first mail that light usage might be the culprit, but they were just saying that without looking at my numbers. If you use the light constantly, you should still get more than 5 days' use out of your Glo. Like murg described, he used the light for 6 hours with no battery drop at all... (well, not battery meter change).
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