What is the minimum instantaneous voltage required for a car battery during ignition?

[MaxDella]

There is no fixed value for the instantaneous voltage of a car battery during startup, as it depends on the starter motor's power and the battery's capacity. Generally, it falls within the range of 9-12V. The starting voltage of a car should not drop below 9V; otherwise, it may cause difficulty in ignition. If the engine fails to start, it indicates that the battery is severely depleted, and a jump start is necessary. Steps for jump-starting a generator: 1. Ensure voltage: First, make sure the auxiliary battery is safely at 12V and the negative terminal is grounded. Also, turn off all unnecessary lights and accessories to prevent electrical accidents. 2. Connect the jumper cables: Be careful not to reverse the positive and negative terminals of the cables, as this can cause sparks when connected. Ensure the cables are tightly wrapped around the battery terminals (for full contact) to avoid sparking during the process. 3. Start the engine: Start the engine of the vehicle with the auxiliary battery and let it run at medium speed, then start the engine of the vehicle with the depleted battery. 4. Disconnect the cables: Finally, disconnect the cables in the exact reverse order of connection.