Uh oh...is it the batties or alt...?

[audiolife 5,000+ posts]

Sorry guys. I'm just lost when it comes to this. I don't have a battery charger. And i've ran the same electrical for 2 years now and all of a sudden, the batteries won't hold a charge. Since I don't have a charger, would it be a good test to put my old alt back in there and see if it could charge the batteries?

An alternator is not a battery charger and a battery resting that low is being undercharged which will result in a battery that won't recharge or become more difficult to recharge. A low battery by itself is hard on an alternator add in posible sulfation it makes it double tough on the alternator.

 

[Davecubs14 10+ year member]

Ok. Well update. My car actually turned on this morning. After being off for about 16 hours. Big change. I disconnected the positive from the battery and my car still ran. The front on seems like it's holding a charge now. I guess the 2400 in the back was bad? I'm still going to get a charger and charge it over night. Any suggestions on what charger to get?

 

[audiolife 5,000+ posts]

Ctek MUS 7002

 

[Davecubs14 10+ year member]

Dang. Hoped for something cheaper. I guess you get what you pay for! Thanks audiolife!