The S-7500P is the Panasonic VW-VBD58 and CGA D54/D28 type dummy battery adaptor. Mount the dummy battery head onto Panasonic DV camera, and connect with pole-tap DC power source, you can prolong the camera running time or get uninterrupted power source from AC-DC adaptor.
S-7500P can be connected with power source by 5.5/2.1mm pole-tap connector, compatible with SWIT DV batteries with Pole-tap socket; SWIT S-3602F/M/P/D/B/J/V/i/C DV battery charger/adaptor, and SWIT S-4310 power distributor for shoulder rigs