P-V257 converts 12V to 5V/7.3V and uses ENDURA batteries.  Choose between the two voltages with a convenient power output switch located on the side below the D-Tap connector used for 5V/7.3V regulated power. Ancillary gear, such as lights, can be powered  via the second unregulated 2-Pin D-Tap on the opposite side of the plate. its unregulated battery throughput voltage output can be as high as 16.8V with IDX Li-Ion batteries.