* Voltage: This is the electrical potential difference between the battery's terminals. Most car batteries have a nominal voltage of 12 volts.
* Ampere-hour (Ah) rating: This indicates the battery's capacity to deliver a specific amount of current over a specific time. A higher Ah rating means the battery can deliver more current for longer.
Current is the flow of electrical charge, and it depends on the load connected to the battery. The battery itself doesn't "have" current; it provides the potential difference (voltage) to drive current through a circuit.
For example, a car battery might have a voltage of 12V and an Ah rating of 50Ah. This means it can theoretically deliver a current of 5 amps for 10 hours (50Ah / 5A = 10 hours).
Here's how it works:
* When you turn on your car's ignition, the starter motor draws a large amount of current from the battery.
* This current flow depletes the battery's stored energy.
* The alternator (powered by the engine) then charges the battery to replenish its energy.
So, the car battery doesn't have a "current" in itself, but it provides the voltage that enables the flow of current to power the car's electrical system.
