External battery for HP Prime?

[math7]

I have a portable battery of those "smart" that has a Smart USB port and another Quick Charge 3.0, I would like to know if I can charge the HP Primer with that battery. It is possible to charge it with it, these batteries detect the charge to fix for a cell and the freighter completely turn off or disconnect, but they serve to charge the HP HP, I think the charger of the HP Prime is of 0.3 amps of current, and this Battery Can deliver up to 3 A of charge.
It would be very useful if it were so because then it would not be possible to stay "without load" in a test or another situation because the Prime comes to download and have a battery of these at hand would be the solution.