The Deity SPD-T4DT is a power cable that connects a D-Tap, also called P-Tap, battery output to a TA4f input. Deity specifies it for TA4f-powered equipment operating within the connected battery's 12 to 18 V range.

The official compatibility examples include the Anton/Bauer Titan SL 90, Core SWX Powerbase, Nano and Hypercore NEO Slim 98Wh, Fxlion Nano One, IndiPRO 98Wh V-Mount and SHAPE BP-U65. Before use, confirm that the TA4f device accepts the voltage supplied by the D-Tap battery.