A High Energy, Modular Power Pack For The Qflash X/X2 Qpaq-X is Quantum's modular portable flash system. Connect two Qflash X Series heads for a maximum of 400 w/s per flash. Flash power is controlled from both the Qpaq-X and Qflash. The Qpaq-X is powered by replaceable, rechargeable battery modules. Select either small or large battery modules to fit the needs of your assignment. Connect an optional AC module for studio use.