Rick's Free Auto Repair Advice

Posts Tagged: car battery

How a car battery works

How does a car battery make electricity? A car battery has positive and negative electrodes immersed in an electrolyte (a solution that supplies water and acid for an electrochemical reaction). The electrodes (plates) are made from dissimilar materials. When these two dissimilar materials are immersed in an electrolyte, they create a voltage potential. The amount of voltage produced by each set of electrodes depends on the type of material used to build the electrode, but is typically 2.1 to 2.2 volts for a lead acid car battery. In a typical … Read More

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