This quick video will show you how to quickly remove the V.360° battery door. The O-ring on the battery door completes the waterproof seal on the V.360°. Please make sure when installing and uninstalling the battery door that the O-ring is present. Due to the seals on the battery door and making sure the battery completely seals out water, it will require a little extra force to unscrew the door.
The trick to easily removing the battery door is to turn the door counter clockwise where the line passes the unlock icon and the door will pop out allowing you to remove if from the camera.