Battery to mounting bracket connector is melted;
Dust and dirt may cause loose connectivity in between surfaces of batter insert and mounting bracket prongs. System may work but any shake may cause sparking which causes blades getting hot and melting the plastic supports.
Make sure you keep connectors clean or wipe them every-often.
You can order replacement parts in case.
We're Happy to help:
Still can't find the solution?
Or
2. Connect with our agents through live chats 
Related Articles
Controller power bullet connectors are melted
Loose connectivity cause sparks which fries and melt the connector. Replace the bullet connector. Crimp properly and make sure the connector will stay fully connected.Power cuts out while riding and screen goes off
Battery runs out of charge Charge the battery LCD display waterproof cable connector is loose. Re-connect and check all other connectors in the line. Loose conductivity between battery and bracket Check connector pins for sparks or being loose. ...System does not turn on
System does not turn on Connections are not completed Do a thorough check from battery power lines to controller and all other connectors Battery is turned off Turn battery on using the on/off switch on the battery Battery is dead See if battery ...Battery does not charge up with standard charger
Battery is already full Battery indicator delays updating the recent charge status. give it some moments of ride or read battery voltage when system is ON, on page 3 of screen by double clicking the middle button. Above 41V for 36V nominal systems is ...System works but cannot read anything on the display Display
LCD issue Needs parts replacement