Clip+ Refresh battery / Add power + Microsd Card Power req. + Mic

I can run mine from a Royal PowerBurst PB 10000 Rechargable Battery that I bought at Costco for $18.00. (Half off on clearance.) Since the Clip+ has such a low power consumption, and the PB 10000 has a 10,000 mAh capacity, it can run the Clip+ for weeks. What I don’t know is whether it would still do that if the internal battery was completely dead. But this is just one type of USB Rechargable Battery on the market, and it seems logical that they should all work in a similar fashion. Hopefully, they would also work without the internal battery as well.