I am helping a company who currently offers an external battery system for Nikon, Canon and others and is wanting to add Phase One to their list of
manufacturers. The system basically connects your camera/digital back to a external battery, say a 12000Mah thus giving your IQ back 3-4 times battery life over the current 3400Mah battery. When
your external battery gets low you can change out that battery, and the system still provides power to the camera/back thus not having to power down the camera/back at all.
The system is proven, works well in other manufacturers and I'm providing my rig for some R&D.
I am curious to those P1 owners out there if you find this a device you would consider adding to your outfit.