LED setup, general questions regarding amps
Nope.  USB can't supply nearly that much power. 

My rule of thumb is 12W per 150 LEDs per channel, you have 3 channels so 36W,  and hi power USB is good for 10W.  Not even close.  

It's obvious you are going for USB packs because that's what you know.   Widen your horizons. 

Since that and the largest variety of  LEDs are 12V, you should select 12V batteries.  There are myriad 12V batteries on the market of every size, from 8 AAA cells to 8 D cells to all manner of AGM or gel cell to even 12V lithium packs.