Why does the motorcycle stall due to unstable battery voltage?

[SanClayton]

Motorcycle stalling due to unstable battery voltage is caused by issues with the vehicle's alternator or its voltage regulator/rectifier module, which leads to unstable voltage output. Hazards of voltage instability: Voltage instability can significantly impact vehicle operation and must be promptly repaired. If the vehicle isn't equipped with a built-in voltmeter, you can purchase an external voltmeter that plugs directly into the cigarette lighter socket for convenient monitoring. Normal voltage ranges: When measuring with the engine off, the voltage typically ranges between 9-12V. After engine startup, the charging system begins supplying power to the battery. The charging voltage displayed between the battery positive terminal and alternator positive connection should normally remain below 12.8V for proper operation.