Hawk-Woods 15mm power adaptor for the Canon C200/C300 Mark 2, will enable you to power the camera with a V-LOK battery via a 15mm bar system.
This adaptor comes with 5x power-con outputs, and is supplied with the power cable PC-24
The extra power-con outputs will allow you to power further accessories, the adaptors outputs are all un-regulated 11-17v.