I have had a PM asking:
I'm considering mini view camera, and was wondering
how you provide power to H3dii-50 digital back
when used with Sinar p3?
I power my digiback from my laptop, via the Firewire cable.
There are external battery options which, I hope, other members will advise you on.
Linhof do a sliding back that has a position for a Hasselblad battery.
¿Any other options?