L-Series Battery Plate, 1 x 7.4V 2.1mm DC Barrel Output, 1 x 12V 2.5mm DC Barrel Output, Mounts on Cage Using 2 x 1/4"-20 Screws, Lightweight Plastic Construction. Mount your L-series battery on your cage to power your camera and accessories with this L-Series Battery Adapter Plate Lite from SmallRig. This compact aluminum battery plate accepts a separately available high-capacity Sony NP-F/L-series type battery to provide up to 12V or 7.4Vpower to your camera or accessory. The plate mounts onto your camera rig or cage using the two included 1/4-20 screws. It features rubber padding so it doesn't twist while mounted and protects the camera cage from scratches. There is one 12 VDC 2.5mm barrel output and one 2.1mm 7.4V barrel output which can connect power cables or dummy batteries.