The Pocket Shield is the basic expansion board for CyberPi. It provides CyberPi with autonomy, not requiring to be physically connected to a computer. It has a built-in 3.7V, 800 mAh rechargeable battery. It also integrates two DC motor interfaces, and two 3-pin interfaces that are compatible with servos, light strips and Arduino sensors. The casing can be mounted with Makeblock and LEGO structural parts.