Plug in. Power up. Roll out.The BOLT Power Pack lets you charge, store, and carry Sphero BOLT robots... times 15. Built with an integrated cooling system, your robots can charge safely all from one place. With more robots, a longer battery life (2+ hours), auto-aiming, and more, the BOLT Power Pack is the top of the line kit for educators using the Sphero Edu program in a classroom, robotics club, or in any maker environment you can dream up. Plus it’s loaded with Turbo Covers, maze tape, and protractors, so the activities can get started anytime, anywhere. Tote it all like a boss in a sleek airline compliant carrying case on rollers with a retractable handle. You’ll officially be the best teacher ever.