Thanks for the help with posting this stuff. Just to clarify, you aren’t using an on-battery Battery Management System and instead are just running the sense wires to a connector for when you’re charging?
I ask because I’ve also been following this: http://www.ebikeschool.com/how-to-build-a-diy-electric-bicycle-lithium-battery-from-18650-cells/
He uses an on-battery BMS. I have a high-end smart charger, so if it’s not needed and just the connector is, then that’d save me some time/weight.