You can buy connector that goes on esc side, but not for batteries.
https://www.amainhobbies.com/traxxas-trx-device-connector-2-male-tra3070x/p967673?gclid=Cj0KCQiA5NSdBhDfARIsALzs2EBlovWMgYCejIGjh4KVyxJaguKe51ulBXcC3TMfp-mwwWdoljOzEpIaAvOsEALw_wcB
You can buy an adapter, they work decent. I...