For operators of Sony's HVR series camcorders, the P-V284 V-Plate installs easily onto the A-CA74E for Sony-specific adaptability - one 2-Pin D-Tap serves as the 8.4V connection to the battery coupler and a second 50W 2-Pin D-Tap is included for optional accessory power. its unregulated battery throughput voltage output can be as high as 16.8V with IDX Li-Ion batteries.