![]() This seems a necessary exercise, IF the software is designed to shut down when the meter reads below a certain threshold. If this is right (and I still don't know how the readings work), then when it hits 100%, that is when the battery is actually truly at 100%, and "calibrating" it will retrain the meter to read the status correctly. When it sits at 96% for more than an hour, that is because the meter went to 96% while the battery wasn't really at 96%, and so now the meter is waiting for the battery to catch up. My theory at the moment - when it says 70%, for example, its not really at 70%, but much lower. I am curious, how does the "meter calibration" thing work? I mean, what are the odds that somehow the software is reading the battery status so incredibly wrong that it just jumps around? In literally 5 seconds, I watched the battery meter change to 62%, and now it appears to be charging at the rate of 2% per minute. To add, I just connected the charger to it. ![]() Do you think doing some sort of manual firmware flash, or going back to an old firmware might help? Draining while sleeping feels like a "wake-lock" issue or something similar? I am comfortable enough to open it, BUT would rather not if I could avoid it. Either the battery is THAT bad right now, OR something else is going on. Its just sleeping and seems to be collapsing. Even if the battery was dead, I would have to be USING the device for it to drain. ![]() When I turned it back on some 15 minutes later, the battery had dropped to 64%, and while I was staring at it, it continued to drain and is now at 60% as I type. Unplugged it at 96%, turned off wifi and sleepcover detection, and didn't even read on it, just put it back to sleep. Once you open it, you lose the waterproofing. If that fails, it would be best to replace it unless you are confident you can open it, replace the battery and then close it. I suggest you keep the WiFi off and do not load any new firmware on it in case the battery was to die before it was updated. Any surprises that I should be ready for? If the consensus is to go ahead and open it, then two more questions :ġ) Does this use the same battery as the first generation Aura (N514)? If yes, I have two spare Auras, one of them exclusively serving as a spare parts device! My research seems to indicate they use the same battery, but I was unable to find conclusive information on this.Ģ) The teardown looked pretty simple, just get the bezel off CAREFULLY and the rest is straightforward. I don't care about the waterproofing, and its an old device way out of warranty, so I have no qualms about opening it up. BUT my concern is that the crazy jumps in battery status COULD be a short circuit in the battery, and if thats the case, it might explode and kill the screen if I leave it charging for 24 hours!ġ) Charge 24 hours and try to calibrate it.Ģ) Leave it alone and enjoy the device as long as the battery was able to power it long enough to read for a few hours. I found one discussion that suggested letting the battery charge for 24 hours and then "calibrating" it by letting it die and charging it to 100% a few times. ![]() Wifi is on and connected, the device is not in its sleep cover, but the sleep cover automation was enabled in the settings. After two hours, it seems to now be happy at 96% and is not budging. I connected the charger, and in about 5 minutes, it was showing 50%. After about an hour or so of reading with the light at 10%, it was down to 23%. After a factory reset and sideloading 50 epubs using Calibre, it was down to 43%. I did the factory reset (from the settings menu) and loaded up my books on it, everything SEEMS okay, but as the seller said, it seems there is indeed a battery problem.Īfter an hour of charging from zero, it was showing 70%. It was updating when I got it to power on, and since I had the charger connected the whole time, it completed successfully this time. It seems the battery had gone dead in the middle of a firmware update. I read up on the manual factory reset method and was all set to try 10 different things to get it to work, but about an hour after I connected the charger, simply pressing the power button started up the device! The seller said it was stuck on the sleep screen and reset did not work, nothing worked, and that he believed it was a battery problem. I just got my hands on an Aura H2O this morning. ![]()
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