Yes, a fully charged battery can start and run a car. However, anything that uses electricity will draw-down the battery capacity until eventually, the battery will be incapable of sustaining the ignition circuit. For example, if the alternator were to fail a night during a long trip, the lighting system [headlights, marker lights, brake lights, and the tail and turn signal lights will severely drain the battery in an one to three hours. On the other hand, if the vehicle is operated only in daylight, and none of the electrical draining functions are used [radio, A/C, heater blower, etc.] are used, the vehicle can be driven for many hours. The length of time the battery will sustain ingnition function is dependent on the capacity of the battery, the level of charge at the start, and the amount of accessory electrical use demanded of it.
The battery will run down and he engine will stop. You will not be able to start the engine. The alternator keeps the battery fully charged.
Test the battery with a digital voltmeter. You should get a reading of 12.6 V if the battery is fully charged. If the battery is fully charged then you know the alternator is functioning properly and your problem is more than likely a defective starter.
Yes, as long as you have a fully charged battery and good starter the engine will start even if the alternator is defective. The engine will run until the battery looses it's charge, which it will. if the alternator is bad.
An alternator is designed to keep a fully charged battery at peak level. It is not designed to charge a dead battery. Installing a new alternator on a car with a dead battery can in some cases ruin the new alternator. Fully charge the dead battery before starting the engine.
Your battery is not fully charged. Can mean the battery is going bad or the alternator is failing.
Low/bad battery, bad battery connection. If the battery isn't getting fully charged you might not be able to start. If it isn't getting charged, check the alternator.
I would suspect a bad alternator and battery, have them both checked at the parts store. A car with a fully charged battery and a bad alternator will run until the battery is drained and then quit.
If the alternator is bad the car will still start. You just need a fully charged battery. Once running then you can check the charge rate from the battery with a volt meter.
That will depend on the capacity of the battery and the amount of electrical loads. could be 15 minutes or a couple of hours.
bad solenoid...will usually click up a storm when you turn on the ignition.
bad battery, and bad alternator not keeping it charged - also bad connections to the battery or loose wire connections on the alternator.
Yes, the battery starts the engine, and as long as the battery is fully charged the engine will start. The battery will loose it's charge if the alternator is defective and not replenishing the charge of the battery but the alternator has nothing to do with starting the engine.