Sphero Sprk+ Power Pack is the premium kit for educators to use Sphero in a classroom, robotics club or in any maker environment you can dream up. It lets users charge, store, and carry SPRK+ robots by the dozen. Built with an integrated cooling system, it charges multiple robots safely, all from one place. Included with the Power Pack are 12 shiny SPRK+ robots, and Turbo Covers, so the activities can get started anytime, anywhere.