DooQi CADA Technik Power Function Kit for Technical Cars, Including 3 Motors, LEDs, Battery Box and 2.4 Ghz Remote Control (Compatible with Many Models Such As Lego CADA) (S059-001)
LEGO Technic Battery Box with Beam Connectors without Lids for Batteries | Brick Owl - LEGO Marketplace
Alternative LEGO Battery Box - AA Type – Green Gecko Workshop
LEGO Technic Power Functions Motor Set 8293 - Walmart.com
LEGO Electric 9V Battery Box 4 x 14 x 4 with Dark Gray Base (2847) | Brick Owl - LEGO Marketplace
Build your LiPo rechargeable battery for Control+ and Powered Up hubs. - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums