See how to make a guerilla battery pack for your camera! For this quick battery hack from ChappyShowcase, all you need is some gaffing tape and two batteries from your camcorder. Simply tape the two batteries together so that the contact terminals are facing away from each other. By combining two batteries into one, you'll have a guerilla battery brick setup. Now you're prepped for the most efficient battery swapping capabilities possible! This is a good trick for any assistant cameraman.