Holy crap, the only thing that I know for sure from reading the information in that link is that I belong in the remedial class.
I truly appreciate those brainiacs that will unrelentingly pursue the answers to all of the possibilities, but I'm afraid that I will have to wait for the final report and just harvest the fruit of their labor.
My gut feeling is that a 4 minute recharge would lead to battery damage, fire, or possible explosion.