I can't get my batteries to take a full charge. They are still strong and sit around 12.6v and load test fine, but my charger can never get them to full charge to where it shuts off and they get real hot when charged for a while. They are Group 24 1100MCA EFI rated batteries.
I've noticed my alternator has started to fluctuate, charging less at idle around 13.6v and more at higher idle or cruising speed around 14.2v or so. I've never seen it fluctuate like this before and was wondering if it's normal or if it's a sign my batteries are shot. Also wondering if batteries that can't be fully charged will hurt my alternator, it's brand new has maybe an hour on it.
By the way it's a Merc 250 EFI.
Thanks.
I've noticed my alternator has started to fluctuate, charging less at idle around 13.6v and more at higher idle or cruising speed around 14.2v or so. I've never seen it fluctuate like this before and was wondering if it's normal or if it's a sign my batteries are shot. Also wondering if batteries that can't be fully charged will hurt my alternator, it's brand new has maybe an hour on it.
By the way it's a Merc 250 EFI.
Thanks.