***UPDATE***
The Bangood battery works IF and only IF, using the 'Litchi' app and NOT when using the DJI-GO app. At least, it doesn't shut down immediately after startup. In preliminary testing, there were no issues. When we go out to fly again in a few days, more comprehensive testing will be done.
So I have therefore notified Bangood as well as PayPal to fuggid about the refund, I already have a true DJI battery on its way. So I will have 3 batteries. The catch is, the Litchi app must be purchased at the cost of $20. And there goes any savings one might have enjoyed had the battery just worked as promised from the beginning. Had it been in the description that a different type of app is needed so it works, I would have continued my search for a cheap battery. Of course, the app only needs to be purchased once, so after the initial cost, the battery price is still the best I have seen.
I will report back my findings. I am hoping my experiences helps another.