Chosen Solution
Hello, I broke this cable and I don’t know if it’s possible to find a new one on eBay or AliExpress or somewhere else? On this website they call it Battery board data cable connector but I couldn’t find anything.
Thank you for your help
Sadly this series has a soldered on cable, you’ll need a new battery ;-{ MacBook Pro 15" Retina (Late 2016-2017) Battery
Your only other option is to find a junker battery to swap the cable over if you’ve the ability to desolder the cables and solder it back on.