The BLH1 Battery Coupler to D-Tap Adapter Kit from Bescor connects Olympus OM-D E-M1 Mark II, E-M1 Mark III, and E-M1X Mirrorless Digital Cameras to a D-Tap power port. One end of the coupler features a D-Tap connecter, and the other end provides a BLH1-style dummy battery to connect to your camera.