my ebike battery isnt charging, any tips to remove the white goo on the leads of these wires?

Hey there, I got an e-bike a while back, and suddenly the battery stopped charging. I thought it was the charger, waited for a replacement charger and then that didn’t fix it. I have a bit of background with electronics so I took the cap off the battery and poked around with a multimeter. I think the issue is the connections of the charging cable, anyone know what this white goo on top of the wires is and how I could remove it?

The battery was under warranty so I’m getting a replacement but I’d hate to throw a mostly good battery in the trash