MobileRead Forums - View Single Post - Kindle PW2 error says Battery Invalid: -22

javimixet · 01-31-2018, 07:19 AM

Wow!!! Thank you very much!!!!
It is ALIVE!!!!

Bought a used Paperwhite for 50€ with loose charging port. Charged it, connected to wifi to download my kindle books (I think it made an automatic update) turn it off and tear it apart to see what the problem was with the micro-usb. It was rusty inside, maybe put by error in washing machine. Usb pins was rusty and with a whiteish, don't know if soap of some kind of rust, matter. Cleaned it with soft brush and tested the pins, +5 was failing. Resoldered it and turned on: BATTERY INVALID: -22

Turned out I had some problems with fastboot because the +5 was not properly soldered. Once this was done the instructions in this thread went smooth as silk... even with the name and extension of the downloaded images varying a bit.

So, don't know if it was the usb problem or the update that caused the mess... reading *adonis* seems the update is the culprit. And I understand that I have to do nothing else to avoid autoupdating. Is that correct?

Thanks, thanks, THANKS!!!

01-31-2018, 07:19 AM	#27
javimixet Junior Member Posts: 4 Karma: 10 Join Date: Jul 2012 Device: kindle 3 keyboard	Revived Wow!!! Thank you very much!!!! It is ALIVE!!!! Bought a used Paperwhite for 50€ with loose charging port. Charged it, connected to wifi to download my kindle books (I think it made an automatic update) turn it off and tear it apart to see what the problem was with the micro-usb. It was rusty inside, maybe put by error in washing machine. Usb pins was rusty and with a whiteish, don't know if soap of some kind of rust, matter. Cleaned it with soft brush and tested the pins, +5 was failing. Resoldered it and turned on: BATTERY INVALID: -22 Turned out I had some problems with fastboot because the +5 was not properly soldered. Once this was done the instructions in this thread went smooth as silk... even with the name and extension of the downloaded images varying a bit. So, don't know if it was the usb problem or the update that caused the mess... reading adonis seems the update is the culprit. And I understand that I have to do nothing else to avoid autoupdating. Is that correct? Thanks, thanks, THANKS!!!