LEGO Renewable Energy Add-on set 9688 - LEGO Education - KinderSpell ®
Brick-Shop - Technic Renewable Energy Add-on Set (9688) Service Pack Parts Light Gray Technic Turntable, large Type 1, complete AssemblyElectric Battery Box Train Power Functions Motor (8881) Engine Motor LegoTechnic Renewable Energy
Amazon.com: Lego Education Renewable Energy Add-on Set 9688 : Toys & Games