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Battery Charging and Starting DevicesMore than a third of car breakdowns are related to car batteries or vehicle electronics, according to ADAC.
The starter battery provides the current for the starter electric pulse for the engine start.
In addition to the power for the starter, the car battery also supplies the power for lights, windscreen heating, the car radio and other electronic parts of the vehicle while the engine is not running or when the vehicle is idling or when the generator does not deliver enough power for the electronic parts in the car. In addition, the starter battery is used to protect against overvoltage in the electrical system.
In particular, starter batteries must provide high levels of power over a short period of time when starting the vehicle.
The biggest burden for a starter battery is the cold start of a car. There are three reasons for this:
- Since the oil in the engine is tough due to the low temperature, the mechanical resistance forces are large. As a result, the starter needs more energy to crank the engine. The battery must therefore supply more power.
- At the same time, the battery power is reduced in cold temperatures. The battery loses charge voltage when it is cold.
- In addition, the battery is not fully charged when it is cold. This means that a higher performance must be provided with simultaneous power loss.
Car batteries have the property to discharge themselves. This means if no external circuit is connected, metallic circuits in the lead alloy will still create internal circuits inside the battery that lead to discharge.
During operation of the engine, the starter battery is recharged in a car by the excess electrical energy of the engine. Therefore, driving longer distances for a car battery is better than often driving short distances.
A car starter battery is an accumulator (battery), more precisely: a lead-acid battery, since a car battery consists of lead and acid.
Good maintenance extends battery life:
A car battery should be checked regularly for its fluid content. If necessary, the liquid must be refilled. Only distilled water should be added to the battery. In addition, a car battery should never run completely empty.
A car battery can be recharged with a dedicated battery charger.
A battery tester can determine the voltage status of a battery.