I need to build a portable HUB to power 7 go pros for a time-lapse shot. i have a reliable system which is an AC powered HUB that feeds power to 7 usb Battery eliminators to power the go pros. the hub is powered by a 12v AC powered PSU. What I would like to do is replace the PSU with a V-lock battery 14.4V and bypass the usb ports so the battery eliminators are hard wired to the HUB, this way i can rehouse the unit and run it of batteries for portability.