Amazon.com: FINER SHOP Technic Power Functions Motor Set for Lego Technic, Upgraded Pack Crane Model, 2X M-Motors, 4X L-Motors, XL-Motos, 6X Battery Box, Receiver, Remote Control (48M717R3OFHMXQ4149X) : Toys & Games
Batteries and Battery packs
New 8878 Rechargeable Lithium battery Multi Power Functions Tool PF Model Sets Building Blocks Compatible with Lego Parts MOC - AliExpress
Amazon.com: 40Pcs Power Function Kit Set Motor Battery Bluetooth-Remote-Control Receiver Train Adjustable Speed Motor Parts,Latest Differential,Motor Power Parts Compatible with Lego Technic-Parts : Toys & Games
How to modify your Lego Technic Battery Box. Save on Batteries! More Power! - YouTube
LEGO® Technic 42077 Buggy B-model Power Functions building instructions - RacingBrick
LEGO Power Functions AAA Battery Box 88000 - Walmart.com