If Battery Is Dead Will Alternator Charge It. But if the alternator dies completely the battery will die soon afterward because it is not powerful enough to supply electricity to all these components on its own. New alternator and still dead battery What now After driving it off the trailer and parking it in the garage for a few days the car did not start.
When a car doesnt start many people wonder whether the alternator or the battery is to blame. While your car is running disconnect the positive battery cable. Alternator size Output capabilities- an alternator generating more power and has less load will take less time to charge a battery than one.
This means that the voltage of the battery is below a functional amount.
Larger capacity and more deeply discharged batteries will take longer to charge than smaller or less deeply discharged batteries. However the cars alternator can only supply just enough power to keep your cars battery at a full charge. This is a brief demonstration of how to assess alternator output when charging a dead battery. An alternator can help replenish the battery in your car but it cant keep it going indefinitely.
