I would buy a Lanparte V-Mount battery pinch $180 off Ebay,
Then get a Swit 190Wh V-Mount Battery,
then buy a new or used used Canon DR-E6 DC Coupler for $50 bucks new or less used for the 7D-5D DSLR's
http://www.bhphotovideo.com/c/product/5 ... upler.htmlThe Swit 190Wh will last twice as long as the Switronix PB-70 that is bundled with the BMCC/BMPC
But will cost you since the bundle price of the Switronix PB-70 with the BMCC is only $95 extra,
Hence the reason I bought 2 BMCC cameras and sold them all for a profit without the Switronix battery.
Also I run the BMCC Camera, DP4 EVF, H4N off one Switronix PB-70,
Not sure of the exact battery life maybe 3 hrs max??
But I guarantee the SWIT 190Wh V-Mount Battery will power all three for twice as long.
Further more the Lanparte has more Power outputs and HDMI in-out puts than you would probably ever use. At the moment I can't find one on Ebay for $180, but just keep looking, they are there for less.
Try this one, With a "make offer" offer $170 or $180, it has free shipping, you cant lose really.
http://www.ebay.com/itm/LanParte-V-Moun ... 337720c9ebKeep in mind it may take awhile for the delivery

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