LEGO Power Functions - M Motor 8883 and AAA Battery Box 88000 Review ( PF ) - YouTube
Amazon.com: 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) : Toys
The new Powered Up battery box | Brickset: LEGO set guide and database
Batteries and Battery packs
Lego 8878 Power Functions Rechargeable Battery and 8887 Transformer - YouTube
BrickLink - Part 4350c02 : LEGO Electric 4.5V 3 C-Cell Battery Box with Switch 4 x 24 [Electric, Battery Box] - BrickLink Reference Catalog
LEGO® Technic™ Small Hub akkumulátor 45612 | LEGO® Education | Hivatalos LEGO® Áruházból HU