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knc1 · 08-25-2017, 08:19 AM

Let it chill out.

There is a design problem with the battery management's charger and a very low battery (in a warm room).
The development offices of Amazon/Lab126 are evidently air conditioned to a constant 72 degrees.

The result is everything appears normal that can be seen, but the Kindle's battery isn't actually being charged. Not even during the course of 48 hours.

EoS
= = = = =

Put the Kindle in your refrigerator.
Allow to chill for several hours (it is the battery internals that need to be chilled).
Most refrigerators are set to a temperature of 42 to 38 degrees (if you have dairy products in it).
Chill, baby, chill.

The next thing to watch out for is to not expose the Kindle to conditions that allow condensation to form.
(I live a couple of hundred feet from a lake - not easy to do here.)
I used a micro-fiber cloth about the size of a large wash cloth to loosely wrap the Kindle when I took it out of the refrigerator.
That reduces the humid air that can reach the Kindle and does soak up any condensation that might form.
(It isn't the condensation on the outside that is the major concern, it is the condensation that might be forming inside of the case.)

Now hook the wrapped, cold, Kindle to a wall charger and wait.
Under these conditions, the wall charger / battery management controller can get enough charge into the battery before it gets warm enough to shut down on a high battery temperature condition to return to normal operation.

In the past two days I have had to do the above to five KT Kindles, three PW1 Kindles, one PW3 Kindle and one KT3 Kindle that simply refused to re-charge when starting from a (warm) room temperature and a battery too discharged to allow the full boot process.
All completely re-charged within a couple of hours, even those that where in the midst of re-booting when they shut down on a "low battery" condition.
(Which sounds like what yours is doing.)

The logs I have looked at after the Kindles returned to "normal" shows that the battery management was just cycling between low voltage on and high temperature off conditions.

= = = =

Do not expect anything to change on the screen until the Kindle begins running normally.
The e-ink screen is meta-stable (like ink on paper), it always shows what was last written to it - even without power, disconnected from everything, sitting on a shelf.

08-25-2017, 08:19 AM	#2
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	Let it chill out. There is a design problem with the battery management's charger and a very low battery (in a warm room). The development offices of Amazon/Lab126 are evidently air conditioned to a constant 72 degrees. The result is everything appears normal that can be seen, but the Kindle's battery isn't actually being charged. Not even during the course of 48 hours. EoS = = = = = Put the Kindle in your refrigerator. Allow to chill for several hours (it is the battery internals that need to be chilled). Most refrigerators are set to a temperature of 42 to 38 degrees (if you have dairy products in it). Chill, baby, chill. The next thing to watch out for is to not expose the Kindle to conditions that allow condensation to form. (I live a couple of hundred feet from a lake - not easy to do here.) I used a micro-fiber cloth about the size of a large wash cloth to loosely wrap the Kindle when I took it out of the refrigerator. That reduces the humid air that can reach the Kindle and does soak up any condensation that might form. (It isn't the condensation on the outside that is the major concern, it is the condensation that might be forming inside of the case.) Now hook the wrapped, cold, Kindle to a wall charger and wait. Under these conditions, the wall charger / battery management controller can get enough charge into the battery before it gets warm enough to shut down on a high battery temperature condition to return to normal operation. In the past two days I have had to do the above to five KT Kindles, three PW1 Kindles, one PW3 Kindle and one KT3 Kindle that simply refused to re-charge when starting from a (warm) room temperature and a battery too discharged to allow the full boot process. All completely re-charged within a couple of hours, even those that where in the midst of re-booting when they shut down on a "low battery" condition. (Which sounds like what yours is doing.) The logs I have looked at after the Kindles returned to "normal" shows that the battery management was just cycling between low voltage on and high temperature off conditions. = = = = Do not expect anything to change on the screen until the Kindle begins running normally. The e-ink screen is meta-stable (like ink on paper), it always shows what was last written to it - even without power, disconnected from everything, sitting on a shelf.