The Juicebox v-mount battery is the most efficient and cost effective high capacity camera battery you'll find anywhere. And, to save you hundreds of dollars on a charging system, we've included a high efficiency smart charger. With a super-long-lasting (150 watt hour) lithium ion core, exceptional quality LG cells, zero memory effect and compatibility with any standard v-mount system, we're excited to present to you the solution to all camera power solutions.