14.4 vs. 13.2 Vdc, 1 , 2 or 3 batteries on your sled, parallel or series your batteries, direct connect wiring (old style) or modern power circuits, linear power supplies, microprocessors, switchers, C cells or D cells, nominal power draws, multiple camera start up currents are all factors.
(multiple camera; start up; ) (currents; are; all factors)
multiple camera currents
start up are
all factors