GoPro: battery or not?

[dptcalvin]

Since the Phantom 2 supplied power to the GoPro (I'm using a Hero 3 BE), do I still need to keep the battery in the GoPro to maintain the weight for the gimbal or can I just leave the battery out of my GoPro?

 

[ThePhantom]

Keep the battery.

 

[SteveMann]

Keep the battery.

My Hero4 BE won't stay on without the battery.

 

[dptcalvin]

Got it, thanks guys!