Amazon Kindle Fire HDX 3rd Gen 8.9 Battery

I originally had 2 of these and I could never get one of them to work (this one).  I kept swapping parts around, but never got this to work though I am quite certain the battery is good. This listing is for the BATTERY only, but most of the various parts are also there, but these are, gratis and "for parts or not working"- they may or may not work (motherboard very probably does not).