The Switronix Powerbase-70 is a new battery system for the Canon 5D Mark II and the Canon 7D. It combines a 70 Watt-hour V-Mount battery with a Canon power adapter that plugs right into your camera. With 70 watts of power the battery will run the camera for 6 times longer than a normal Canon battery. Additionally, the system features two P-taps, a battery gauge, and shoe for direct camera mounting. This is a great way to get longer record times on your HDSLR, and at the same time power multiple accessories. Check out the video above to learn more. The Powerbase-70 is now offered at a special introductory price of under $300 – an incredible deal on any V-mount battery. Also check out the various accessories I mention in the video: the P-tap charger, BlackMagic adapter, the AJA Adapter, the Zacuto Z-Cage, and the BlackMagic HDMI-to-SDI converter.