Alvin's Cables BMPCC 4K to D Tap Power Cable for Blackmagic Pocket Cinema Camera 4K Gold Mount V Mount Battery Weipu 2 Pin Female to P Tap

The 2 pin connector is a push-pull self-locking connector. It will automatically lock when inserted into the camera. It is impossible to pop off. You should pinch the top of the 2 pin connector, which will easily pull it out, rather than pull out by pinching directly the cable or the bottom of the connector.