Quote:
Originally Posted by frostschutz
So ... where is that mysterious 10% reserve coming from? Is the battery lying about its own charge level? Is it in the Linux kernel? Is it the Kobo software that reports it differently?
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Again READ !!
It is coming from the hardware build in cirquit. (I don't know if it is exactly 10%,just called this percentage as a example)
THAT system is telling the battery is low power or lost and have a safety margin to prevent the battery from being killed. Where or how that is hidden or implemented is not important.
Then it just stops responding.
It is the same system that the other way around prevents you from overcharging.
If it is not in the firmware of kobo, it is in the device itself.
There is more running on the device than only the kobo firmware.
Try not to trap me, the most important is:
The low battery warning is only telling you that the device will stop running soon,
it is not a "danger now you will kill your battery if you don't stop" warning.
Just enter : li-ion discharge protection circuit into Google.
It is the same as using a Litium-Ion battery in your laptop, yes for sure it is better to charge when the system warns you to do so because you don't want to loose your data that isn't saved.. if you continue working,the laptop will stop and the last data isn't saved.
But it doesn't damage the battery.
It can when you store it at that level and wait a couple of months,then eventually other things drained the battery, and then it can be empty or damaged.
But even my flashlight litium ion battery has a chip at the bottom preventing this from happening.
The factory of the battery always charge it and the chip in it prevents it from working when it dropped under a level of mah and even then it guarantees that it need 10 years from the point that it stops until total destruction. ("rechargable battery with re/discharging protection cirquit" is even printed on it)
In android devices,as I told,the battery stat system controls a part of it. (don't know if the kobo is android based but that is not important as all modern li-ion battery's have the cirquit.)
I end the discussion here,I don't want to bother people or scare them,if wanted you can go further with the discussion by private messages.