Are any battery LEDs flashing red and is the battery beeping?
Note: This would indicate an internal battery error and likely means battery replacement.
Does the power button operate as normal? Does button feel squishy or does it provide haptic feedback?
Does the battery accept charging?
Does the battery turn on when not connected to the motor-battery-cable?
Note: If it turns on when disconnected, run battery diagnostics, then check the motor-battery-cable and its connection to the motor; try a new motor-battery-cable if needed
Use the battery diagnostic program to test for any internal issues (click here for instructions)
Try another battery of the same spec that is known to be functional
Note: All Turbo Levo/Kenevo Gen1 bikes with a Trail Display battery need to power on with a working battery.