How Long Can A Car Battery Run Without An Alternator

You can find the real problem right away if this part is faulty.

How long can a car battery run without an alternator. So how long will your car run without the alternator depends on the power remaining in your car battery. However the battery cant start the cars engine if you leave it for more than two months. Replacing an alternator with a new OEM part is expensive but there are.

If the car has a diesel engine the runtime is extended to from 30 minutes to a couple of hours. With those calculations done we can find how long we can drive. It entirely depends on the capacity of the car battery.

In this situation the battery could last as little as 30 minutes. If the battery does not have a full charge the vehicle may run from 5 to 30 minutes. However the engine will stall as soon as the battery charge is depleted.

If you are lucky and could get up to two hours. The alternator in your car provides power to the spark plugs that ignite the gas in your engine. And in response to the question yes a car can run with a dead battery or a dead alternator as long as the battery still has some charge but not if both are dead.

How long does a car battery last without driving. Theoretically on an older car you can drive forever once the engine is running youll just be without any electrical amenities in the vehicle. In old cars they were often 30A to support 10A constant load whereas today they can be 200A to support 60 A constant load.

If most consumers of electrical energy headlights AC blower motor and so on are off a car could run for 5-60 minutes if it has a gasoline engine. Might save a tow charge if your stuck on the side of a highway. How long your car battery lasts without being charged will depend on how old the battery is and its charge levels.