something is causing a drain on the battery when switch is turned off
Yes, alternators are designed to maintain the battery, or recharge a battery that has been slightly discharged from starting the car. When the alternator is used to recharge a dead battery, it causes the alternator work harder and longer than it is designed for, causing it to overheat, thus causing damage to the alternator. A battery charger should be used instead. They are designed for charging dead batteries. After the battery is charged, let the alternator maintain the charge.
weak or faulty battery, faulty alternator (or slipping alternator belt causing battery not to charge) or faulty starter motor
An auto battery could be leaking for a couple of reasons. The alternator could be overcharging the battery causing the leakage. Or the battery itself could have a short or other internal problem causing it to leak when charging.
It can happen. The bearings on the alternator of my Silverado did that once, and it ended up causing the vehicle to shut down. the alternator on your car charges the battery which in turn runs the electrical supply to the car. if your alternator is damaged the battery will deliver power to the eletrical system until it no longer can and the car will stop running.if i were you i would replace the alternator,recharge the battery if it is still good and then happy motoring.
Alternator Belt has snapped, causing you alternator to stop charging causing you battery light to come on, but this belt also runs your power steering pump which if that's not working your steering will become heavy
You have a short - it's hard to be more exact than that, but if you disconnect the battery and charge it outside of the car and it stays charged, you have a short. If it does not stay charged, you need a new battery.
All that would be left would be a short in the wiring to the alternator.
If its an old battery the cells could be dried up, meaning there is not enough battery acid in it, or if you leave your lights on, or a bad alternator could be causing the battery to not charge while the car is running.
Some light may be on pulling power from the battery. Can also be a stuck relay. The new battery is possibly defective. Alternator can be weak.
Loose or worn fan belt would cause alternator not to spin fast enough to charge battery. Worn bearing in alternator could be causing it to seize and causing belt to slip
Your vehicles primary battery will drain eventually causing it to not start. If you drive for a long time with a dead alternator the vehicle can (rarely) shut off.