Proper connectors - the must to avoid problems in the future

The photo shows the EVBike connectors (at the motor side) that were burnt during a period of use. The reason of such a situation is the dirt on the terminals  and the improper connection. During high current peaks, the connectors overheat and the resistance of such connectors is increasing. The more the resistance is increasing, the more heat is emitted. As a result the connector may become burnt completely.

Make your connections proper. Keep your connectors clean.