I have a 1992 National Dolphin 3400 that was just purchased. While checking all of the operating systems it seems that I cannot get the house batteries to hold more than 11.5 volts. Even after charging them for many hours with an outside charger. I am to the point that I am going to replace them but have a question. They are 2 12V batteries in parallel. I have heard that 2 6V batteries in Series is a better bet.... Would love to hear what you think..
Thanks
Paul
Hesperia, CA
Thanks
Paul
Hesperia, CA