Don't depend on "new". A new part can also fail and they can be faulty right out of the box.
Find a voltmeter and test the battery. It should be around 12 Volts, maybe a little above. Then start the engine (using a jumpstart if necessary).
With YOUR car only running on the battery, use the voltmeter again to test the voltage. If the alternator is working you should have about 13.5 Volts. If it's much below that the alternator isn't working. If that's the case, make sure it's connected properly before you try to replace it.
The battery "starts" the car...after that the alternator keeps the battery charged. They work together in other words.
That could be the alternator or the battery. Try jump starting your car with another car's battery. If it still does not start, it is probably the alternator. If it starts, your battery is dead.
It sounds like your alternator is no longer recharging your battery. You probably need a new alternator.
The answer is no . The battery starts you vehicle , the alternator charges the battery so if your alternator is bad your battery is not receiving a charge which will cause a "no start" condition.
Bad battery. I'd put money on it.
Most likely it will not be the alternator. It sounds as though the alternator is working very well. It will be a faulty battery or a battery drain due to something left on or shorted out. Usually a boot light or glovebox light or recently fitted stereo.
If your car doesnt start, it could be the battery. But if the car starts and you unplug the negative cable and the car turns off, its the alternator.
You should pull the battery and have it tested. If it tests ok, pull the alternator and have it tested. Most auto parts stores have the equipment to test these and there should be no charge for the test.
When the alternator starts charging the battery voltage will increase about two volts to charge the battery.
You either have corroded battery terminals (where cables hook on battery)or a bad alternator ...Autozone willtest for free
proably yes if not its probably something with your battery or alternator
Possibly a bad alternator or battery.