The Core SWX HLX-TA-SFF is a 3-stud mount to 3-stud mount sharkfin plate that accepts HELIX battery packs and standard 14v packs. When two HELIX battery packs are on-board and connected to a HLX mount plate, the adapter can output both 11-17vdc and 22-34vdc. A separate pin set for high voltage allows for safe power transmission.