Btap adapter for CANON XF and Cxx series. The BTAP adapter is the customized power connector designed for BUBBLEPACK voltage regulated output port #3 and #4 (8.4V ~ 11.1V) and the MVFULL regulated output port #4. A BTAP will not fill into a D-tap port and vice-versa. (Verify the voltage selector of before connecting to the camera.)