Originally Posted by Lumatic
That's a lot of battery. I assume you do a lot of boondocking for extended periods? I am just curious why you decided to go for 4 batteries and the battery isolation switch.
I usually stay out for weeks at a time. I do have a Hinda generator, but feel that more is better, especially since I plan on a 120 AC/12 DC Norcold fridge/freezer that will provide proper cooling whilr driving and camping.
The reason for the isolation switch is that AGM batteries charge up quickly and, if deeply discharged, may pull a lot of amperage from the 60 Amp charger on the Xantrex converter. By switching between banks I can:
- Charge one bank (190 Amp Hours) at a time, and not create any potential for a problem,
- Have a reserve if I lose a battery cell (or the entire battery), since this would drop voltage to below 12V
(remember I am using 2 6V batts per bank)
Maybe it is un-necessary, but I have worked on boats and vehicles using two battery banks, and lke the reserve concept.