Battery light on?

It sounds like the alternator is out but to be sure let check out his guide,

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Please run down this guide and report back.

The dash battery indicator light came on today while driving. During the drive home the light was coming on and off. Checked the voltage at the battery with the enigne running and light on and got 14.4 volts. Cleaned the connections and tried a different battery but the light remains lit. Car starts and runs fine and voltage while running seems correct. Any ideas what could be wrong?

Hi
The problem is voltage regulator in your alternator replace and the problem is fine
Sorry for my bad english

The battery light on the dash has recently been coming on while driving my 2002 ford focus wagon. As of today, the light does not turn off. I took the car in to the local mechanic who tested the battery with a voltmeter. The battery is just about one year old. The meter would jump from undercharging to overcharging and sometimes rest in the 'ok' area (sorry, I don't know the numbers). Without any further diagnostics I was told it was most certainly a faulty alternator = $300 or so. I am not looking for a cheaper solution, but a firm believer in "measure twice cut once" and want to be certain that all possible troubleshooting is performed before shelling out the bucks.

I have a couple of questions:

1. Can they test the alternator before replacing it to be certain it is the alternator that is causing the "jump" of the volts? And, if so, what would one look for when they are testing it to determine it is faulty?
2. Does the alternator regulate the volts going to the battery?
3. If not the alternator, what else could cause the volts to jump?

Any wisdom would be greatly appreciated.

Cat

Hi
Check voltage must to be 14.4 volts max not more if the voltage going 15 or 16 volts the problem. Is alternator you can repair just to change voltage regulator and diodes
Sorry for my bad english

Battery lite on alt charging at 14.5volts

Their is a clicking, clicking sound that comes on when driving and some times it make the battery light come on. Battery is good, changed two relay switches and a fuse already, changed the terminals on battery. It's not the alternator, it was replaced 2 yrs. Ago. The radio and lights still work when the clicking is going on, although if driving at night the headlights will flicker when the clicking starts. It the door indicator is on, due to door not closed all the away, when the clicking starts, then the indicator light will flick off and on at the same time, to the same beat of the clicking. We have checked every thing we know and have gone through the Ford book.

Yes it does it even when I'm at a light, I'm afraid the car will die. Some times if it keeps going off alot and fast I will turn off the radioe and heater to see if it stops and it still does it just maybe not as fast. When the battery was checked it showed 15 the car was running and the headlight on and radio on.

Electrical problem
2001 Ford Focus 4 cyl Front Wheel Drive Automatic 160k miles

The battery light on the dash came on today. I don't a book on the car. Car cranks fine.
Thanks.

2001 Ford Focus 4 cyl 260000 miles

i just had a new alternator and battery put in, half way home the battery light started flashing. What now?

Thanx, the light was on before, so I took it in and they said I needed an altinator and that the battery had drained because the altinator was bad. But then light came on again on the way home. It was late so I just drove home. I checked this morning, it still starts up, but the light comes on again.

Electrical problem
2001 Ford Focus Front Wheel Drive Manual

iv, e got ford focus zetec tddi, battery light is on constant, iv, e had alternator reconned