Wooden camera has recently announced shipment of their new gimbal battery plate for Red Cameras. The plate is designed to allow a battery to attach to the side of the camera, shortening your setup for use with a gimbal stabilizer.
Wooden Camera also ship a selection of power extension leads that they recommend checking out when purchasing the Gimbal Battery Plate.
Mounting a battery on the side of the camera is becoming a fairly popular technique to allow users to keep their cameras physically compatible with their gimbal stabilizers.
Another option to moving the battery mount is to extend the reach of the gimbal itself. CineMilled specialise in Arm Extensions for the Ronin that enable you to mount longer, larger camera setups to your gimbal.