So I just got a CP-E4 battery pack in, loaded it up w/ 8 NiMHs and plugged it in to the 580 II. Nothing. I remember reading that besides the CP-E4, you need some batteries in the flash itself to power the LCD/controls. That worked, but now I need to buy more NiMHs...
Is there a work around for this like using 1 AA in the flash and 3 dummies?
TIA


