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Your cars battery is tasked with storing electrical energy, power that is needed to ignite the starter and keep your car running. A weak or dead battery will leave you stranded, while a healthy car battery will perform the functions it is designed to perform.
Basics
With electrical energy stored, your cars battery will have sufficient "juice" to supply power to the starter, which, when turned, helps to start your cars engine. A problem with your battery, connecting points, wires or starter will keep your engine from running.
Alternator
The moment your engine starts to run, the alternator is activated to supply electricity generated by the movement of two pulleys and a drive belt. As long as the alternator is working fine, important functions such as the headlights, the wipers, the sound system and climate control will work.
Voltage Regulator
The battery gets fresh power from the voltage regulator, which directs the regulator to power back to the battery. This step ensures that the battery has enough energy to start your car the next time you turn the key.
