Golden Jubilee
Posts: 5187
Joined: Thu Nov 29, 2012 9:28 pm
Location: Lyman, IA
Re: My '89 9670 build
I think once or twice I've gone below 50% when sitting for more than the night, running heat and computer.
The real problem is automotive regulators aren't set right to fully recharge a deep cycle bank. They'll get the job done eventually, but it doesn't happen in my case between dis-charges. I am in the process of changing to a "marine" multi stage reg, that boost the charge voltage to 14.6- 14.8, for a period than drops to 13.8- 14.2 , then finishes at a float of 13.2
In cold weather I set my fixed voltage reg to 14.6 and it did a good job of charging in less than 10 hrs, but I found as the weather warmed it was too high and after the current dropped to its lowest point (around 5 amps) it would start to climb back up and water usage increased, both indicating it was over charging.
I have close to $700 in that battery pack alone, so it pays to take care of them.