Megaboost? A super high storage minty boost?
So im thinking of making a Mintyboost for my ipod/android phone however I'd like to make it into more of a Megaboost. I wanna build it inside of an old Army ammo case and add multiple usb ports, with a much larger capacity battery(s) So my question is can i add the extra batteries in parallel and have them still recharge and operate the same way? Same scenario with the other usb ports?