I was soldering Deans connectors to my 11.1V 2600mAh battery and accidentally shorted the connectors for about 2 seconds. It got hot and smelled like burnt plastic. I tested it, and it showed 11.1V, so I continued soldering.

Since I'm new to soldering, the wires got very hot for about 3 minutes. After finishing, I tested the connector, which still showed 11.1V.

However, when I connected it to my ESC, BLDC, and receiver, nothing happened—no receiver light or motor noise. I tested the exposed metal of the connector(While connected to ESC), and it now only supplies 3.1-3.6 volts.

Did I fry my battery, or could the ESC be faulty? (It worked the last time I tested it.)