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Can a fuel-powered vehicle be started while charging without moving?

2 Answers

Alexia

07/24/25 5:48am

Fuel-powered vehicles can be started while charging. The correct method and precautions are as follows: After the vehicle is successfully started, you can turn off the charging system and charge the vehicle through the normal operation of the engine. This can reduce damage to the vehicle's battery, extend the battery's lifespan, and also charge the vehicle while driving. Precautions: Before charging, be sure to turn off all electrical appliances in the car (except when the engine is running). First, the generator can charge the battery as long as it is working, and the power source of the generator comes from the engine. After the car is started, the engine begins to work, and the engine transmits power to the generator through the belt, thereby starting to charge the battery.

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DiBrooklyn

08/11/25 1:31am

I've been driving for almost thirty years and have quite a bit of experience with charging fuel-powered vehicles. I remember one winter when the battery was dead. While I was charging it with a charger, I impulsively started the engine, and in a flash, sparks flew, the charger started smoking, and it almost set the garage on fire. From then on, I learned never to start the engine while charging. The reason is simple: when charging a car, you're using an external power source, which usually provides stable current. But once you start the engine, the engine itself generates electricity to charge the battery. These two power sources conflict with each other, easily causing excessive voltage, short-circuit risks, and potentially damaging the charger or battery. Even worse, operating with the charging cable still connected can create sparks that might ignite fuel vapors, especially in enclosed spaces, making it extremely dangerous. My recommended approach is to fully charge the battery first and then separately test the engine to see if it's working properly—this is much safer. For regular battery maintenance, you can use a smart charger, but following the steps carefully is key.

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