Got someone to make this. You can send mail to: sales@dronera.no for more info They have made some extra in case someone else wants to buy this
What is the benefit of this? Can you attach both batteries at once to deliver more power to the motors?
Hehe... You do not get more power out of the motors I use the battery to power the camera, video link and follow focus
Uploaded images showing Double battery tray mounted on MOVI M10 and ALTA Uses battery 1 to MOVI and video link, battery 2 is used to power the RED Epic Double battery is also very fine to long timelapse, lots of power for several hours !!