I have a 2 of Rhino's 3 cell 5000maH lipo and a YEP ESC 180A HV (4~14S) Brushless Speed Controller. I tried connecting them to the ESC and it started fuming at the connector. Even with only 1 battery it also was fuming. To be clear, it is only fuming at the XT60 connectors and the ESC did not fume.