What should be the current when starting a car?

[OSienna]

When starting a car, the current should be around 10A. The car battery provides the current for starting the car. When the generator is overloaded, it can assist the generator in supplying power to the electrical equipment. When the engine is idling, it supplies power to the electrical equipment. The battery is also a large-capacity capacitor that can protect the car's electrical appliances. When the generator's terminal voltage is higher than the electromotive force of the lead-acid battery, it can also charge. The starting current refers to the minimum current obtainable under specific conditions at temperatures between -17.8°C and -28.9°C, linking the battery's starting capability with the engine's displacement, compression ratio, temperature, the technical state of the engine and electrical system, the minimum operating voltage for starting and ignition, and other variables.

[Roland]

The starting current of a car is usually quite high, typically ranging from 150 to 300 amps, depending on the size of the vehicle. Smaller cars like sedans may require 150-200 amps to start, while SUVs or trucks can exceed 300 amps. The battery plays a crucial role—if it's old or has a small capacity, it may not supply enough current during startup, making the car hard to start. This is especially true in winter when lower temperatures thicken the engine oil, increasing the current demand. I remember one time my car wouldn't start in sub-zero temperatures; after checking, I found the battery was drained. After replacing it with a new one, everything worked smoothly. Regular maintenance, like checking the battery voltage and terminals, can prevent roadside breakdowns and save a lot of hassle.

[GenevieveLee]

The starting current generally ranges from 100 to 500 amperes, with significant variations among different vehicle models. For compact cars, it might be around 150 amperes, while larger vehicles like SUVs could require over 250 amperes. Several factors influence this, with cold engine starts being the most demanding due to higher mechanical resistance. The battery voltage needs to remain stable at around 12 volts, with high instantaneous current lasting only a few seconds. If the current fails to rise adequately, it often indicates a battery nearing the end of its lifespan or circuit issues. Having driven multiple car models and observed the starting process, I recommend checking the electrolyte level in summer and preheating the engine in winter to extend battery life.

[Kai]

The starting current of a car is quite significant, with small cars typically drawing around 150 amps, while larger vehicles can reach up to 300 amps. From a safety perspective, ensuring battery health is crucial, as insufficient current may prevent the engine from starting, especially in cold temperatures. Regular maintenance should include cleaning battery terminals and checking that the voltage remains above 12.5 volts to avoid unexpected failures.

[LaDeclan]

The starting current averages around 200 amps, with smaller vehicles being on the lower end and larger vehicles on the higher end. From an economic perspective, this high current consumes battery energy, but high-quality batteries have better recovery efficiency. For long-term vehicle use, choosing a battery with low internal resistance can save on electricity costs. If frequent starts or idling occur, it may increase fuel consumption, and timely maintenance can optimize energy utilization.

[StephanieAnn]

From a maintenance perspective, starting current varies by engine type. As someone who often tinkers with cars, I've noticed that sedans typically draw around 150 amps. You can use tools to measure it - if it's below 100 amps, it might indicate battery leakage or starter motor issues. Check for loose connections yourself, clean off any corrosion to extend lifespan, and avoid unnecessary troubles.