Pixhawk + 4 rotomax 80CC + 4 ESC MONSTER 2000 + battery 48v / 21AH

Hello

I’m building a big quadcopter and i have :

4 motors Rotomax 80 CC (https://hobbyking.com/en_us/turnigy-rotomax-80cc-size-brushless-outrunner-motor.html )
4 ESC MONSTER 2000 ( https://hobbyking.com/en_us/turnigy-monster-2000-200a-4-12s-brushless-esc.html)
1 Flight Controler Pixhawk PX4 ( https://hobbyking.com/en_us/hkpilot32-autonomous-vehicle-32bit-control-set-w-power-module.html)
1 Battery 48v / 21 AH ( http://www.cycloboost.com/batteries-lithium-velos-electriques/batterie-electrique-pvc/48v/batterie-48v-21ah-cellules-lg-pvc-chargeur-3a.html)

How can i plug pixhawk + 4 rotomax 80CC + 4 ESC MONSTER 2000 + battery 48v / 21AH in order to get my quadcopter running perfectly ?

Best regards

The instructions are Here

Your biggest immediate issues will be battery monitoring and power for the Pixhawk.