The PB70-C300 PowerBase-70 Battery Pack is a 77Wh, 14.8V Lithium-ion battery designed to extend HD recording time for the Canon C100/300/500. This battery pack comes with a base that accommodates the battery and the appropriate DC connection for the camera. It included GP-DV-C300 Interchangeable Regulator Block and has a 12" cable. The PowerBase-70 delivers 6 times more power than the original battery supplied with the camera. It is also intended to streamline your recording. The PowerBase-70 mounts under the camera and doubles as a grip, or can be attached to a camera support via its 1/4"-20 release plate or V-mount. Wired as a 14.8V battery pack, it can provide extended power for up to two additional 12VDC devices such as lights, monitors or HD converters as well as other devices requiring lower voltage (an optional XP power regulation cable is needed). The pack is also furnished with 1/4"-20 threads on either side to mount accessories. Wired as a 14.8V battery pack, it can provide extended power to up to 2 additional 12VDC devices, as well as other devices requiring lower voltage through an additional XP power regulation cable.