You could have two battery plates mounted to the camera, one the RED unit and the other the Element Technica unit (or two RED plates or two Element Technica plates, etc.). Plug one unit into the camera and plug the second unit into the first but only when performing the battery swaps. You'll always have to have at least three batteries around on your job but you don't have to dedicate a battery to working on the second plate all the time as it is only needed during the changeovers and that lasts just a few seconds.



