This LEGO large base plates set 9286 includes one grey 38 x 38 cm building plate, 2 green 25 x 25 cm building plates, and one blue 25 x 25 cm building plate.
LEGO WeDo 2.0 Smarthub. This lithium-ion polymer battery is designed for use with the WeDo 2.0 Smarthub, provides longer run time than AA batteries, and requires a charge time of approximately three hours.