PHYNEDI Goshfun 6Pcs Upgraded Motor Power with Extra Modification Accessories Bag Building Set for Lego Technic, 1x L-Motor, 1x M-Motor, 1x Receiver, 1x Servo Motor 1x Battery Box, 1x Remote
USB rechargeable battery solution for the LEGO Technic hub by Phondly - YouTube
Engineers build rechargeable pack for LEGO Technic Control+