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 Electric 9V Battery Box 4 x 8 x 2.3 with Bottom Lid (4760) | Brick Owl - LEGO Marketplace
Lego 8884 Power Functions - New 8881 Box Moc Parts 900mah High-tech Building - Aliexpress