I have the fly more pack for the MA2 and part of my flight team is a ChargeTech Plug 54K that allows me to charge all my equipment while mobile. However, the DJI plug, hub and the batteries are prone to come unplugged, especially while moving. So I made a holder that locked all the important stuff in place. (See Photos) A tab on the bottom left side locks the hub in place preventing battery and hub motion. A tab on the right side holds the charger cord in place. Holes every where possible to allow air flow and visual access to battery level.