That's how all of my BE112's behave on the Prodigy adapter, so yours isn't a fluke. Oddly enough, the BE112's don't behave this way on any other battery I've tried, including other mods. Something about the combination of them with the Prodigy leads to the 'dead stop'.
...and yes - they're closer to an RN4072 than any other 801-style atty - but they do perform quite differently.
That's how all my BE112's behave on...... everything. I still love em.