I have been looking at this Qwiic based servo controller:
https://www.sparkfun.com/products/16773
Obviously, it has another connector for the 2.3-5.5V supply voltage, but I can’t seem to find out what type of connector this is.
Looks like a JST-PH connector and our single cell LiPo batteries have a mating plug on them. If you had your own battery or power source, a connector like [PRT-08670 should also work for you.](Jumper Wire - JST Black Red - PRT-08670 - SparkFun Electronics)