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What is the starting current of a 12V car?

1 Answers

OEmiliano

07/29/25 4:47pm

The maximum current output by the battery when starting the engine of a car using a 12V battery is 550A. The battery is a crucial component of a car. Without it, the car cannot operate normally. When the engine is not started, the battery supplies power to all the electronic devices in the car, and it is also responsible for starting the engine. A battery refers to a type of battery that can be recharged and reused after discharge. There are lead-acid batteries, nickel-iron batteries, and nickel-cadmium batteries, among others. The positive electrode of a lead-acid battery is lead dioxide, the negative electrode is lead, and the electrolyte is a dilute sulfuric acid solution. During discharge (use), the positive and negative electrodes react with sulfuric acid to form lead sulfate. When the concentration of the sulfuric acid solution drops to a certain level, the battery must be recharged. Using an external power source to recharge the battery can restore the electrodes and solution to their original state, allowing the battery to be used again after charging. Battery usage precautions: Be sure not to use the electronic devices in the car for extended periods when the engine is not started, and avoid turning on power-consuming devices simultaneously when starting the engine.

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