I am trying to make a mobile computer for my Raspberry Pi. The problem here, is powering the Pi, screen AND the USB hub from the same power source. I have bought this: http://www.amazon.com/Lumsing-11000mAh-External-Battery-Charger/dp/B00B9BUZW2/ref=pd_sim_sbs_cps_2 external battery pack.
The maximum output from the battery pack is 2.1A. I am trying to boost voltage from 5v to 12v while drawing 5A to power an LCD controller board. This is the voltage converter: http://www.amazon.com/gp/product/B00COD8PDU/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1 (Don't worry, ill attach a good heatsink with a small fan)
Will the 2.1A output max be good enough to boost from 5v to 12v @ 5A? i am also wanting to calculate how long this thing will run from a single charge on the pack. Current draws for each: 750ma - Pi ??? - LCD controller varies maybe 1-1.5A - USB Hub.