The ET-PV2UR is designed to attach directly to the rear of the URSA camera body. Based on the popular IDX V-Plate chassis, the ET-PV2UR allows direct mounting of any high capacity IDX ENDURA Lithium Ion battery. In consideration of the high current draw of the URSA; IDX recommend the following batteries for this application, Elite, E-HL9, E-HL9S, DUO-150 and CUE-D150.The ET-PV2UR also contains an unregulated D-Tap output to allow the use of professional on-board camera lights and other accessories.