The Switronix V-Mount Battery & Charger Kit for Blackmagic Camera, from B&H, contains everything you'll need to take your Blackmagic Cinema Camera on the road and power it by battery.
The V-Mount Plate features two P-Tap output ports and a 20" DC cable extending from it. The cable is for connecting to the camera. Both the P-Taps and cable output 11-17 unregulated voltage. The V-Mount Battery is a lithium-ion with a 98Wh capacity and it runs at 14.4VDC, eliminating all 12V battery cutoff problems. The battery has a 4-stage LED readout offering quick reference for remaining battery power. The PowerBase Charger also has an LED indicator, in this case displaying battery charge status. The PowerBase delivers a full charge in 4-5 hours.