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Charging Help Probs

Posted: Mon Jun 29, 2009 9:56 pm
by Fpv_83
Ey all

Ive got a problem in my fourby where the battery seems to be overcharging.

Ive got a national luna dual battery monitor and it sometimes beeps with the over voltage alarm which is sopposed to go off at 14.5V. Now with a voltimeter it reads 14.4, 14.5, sometimes flickers at 14.6V and i am wondering if there is something wrong with my battery. I have just had the alternator rebuilt fully and my battery is about 12 months old (not even).

Now this is what i did before it beeped at me, had the alternator rebuilt coz it sh*t itself and then all was fine charging at 14.2V. I drive my car once a week if im lucky and i thought the battery was gettin a bit flat so i chucked it on the wall charger for a couple of hours.

Now in the car when the engine is running it charges at like i said too high so the battery alarm doesnt like it.

Now have i damaged the battery or is it so charged up that the alternator doesnt need to charge it and is gettin too much voltage?

I really need it fixed and reliable coz i got a trip comin up in 2 weeks

Please Share any thoughts.

Cheers
Mark

Posted: Mon Jun 29, 2009 10:55 pm
by Ruffy
/i know you've said you just had your alternator re-built, but it sounds like you have a crook voltage reg in the alternator. Whizz it back to the auto eled and get them to re-check it..
The alternator shouldn't even produce that much voltage regardless of battery condition if the reg is doing it's job.

Dan

Posted: Mon Jun 29, 2009 11:19 pm
by Fpv_83
Alright thanks mate
Cheers
Mark

Posted: Tue Jun 30, 2009 9:00 am
by Guy
I would be talking to the shop that did your alt .. it's making a few to many ergs.

Should top out at 14.4 at most.