The backPack Accessory Kit for ultraCage Support Systems from Redrock Micro provides a convenient and extremely helpful rear plate to attach camera-top accessories. The backPack attaches to the ultraCage rear chassis to keep accessories clear of camera operation while still providing a solid and stable mounting.
The backPack is often used to attach a battery plate / battery combination to power the complete rig. It is also used to attach an external recorder in a place that is easily accessible and viewable. The backPack includes two brackets for extra strength and rig clearance and a Cheeseplate with taps for all the standard battery plates.
Note: The backPack Accessory Kit requires the ultraCage and trade rear chassis to be mounted.