well, i run a c1vp (a dressed up c1vn)
and the power options were pretty dismall for my model. as it only takes one battery, and 12 external wouldnt cut it through the plug in port
i currently run a custom power supply
it consists of a 1x capacity battery used as a dummy battery, and has a power cable wired to the inside and terminates to a 4 pin. and i have a 12.6v 11.2ah l-ion battery pack for it that terminates to a 4 pin. this gives me 10-11 hours of recording time
dont ask me where i had it made, cause i dont know who made it, i bought it from someone not on this board. but i might be able to find out if someone was really interested