Mike,
I used to drive a Pontiac station wagon with a diesel... and two regular
automotive-sized batteries connected in parallel. A good system, it gave the
cranking capacity needed, but if you should do anything to "unbalance" the
battery capacity, (such as try to help by jumpstarting another car), the
charging demands of the batteries became unbalanced, and one would overcharge,
and once it did, it would take out the remaining battery.
>From that experience, I would not build a system with different sized
>batteries that operated in parallel continuously, as with a single charging
>circuit. Either electrically isolate the batteries with diodes, so that they
>power separate busses, but still have system redundancy, or with manual
>switches to get the same effect.
Just my 2 cents worth.
Bill Zorc
Vero Beach, FL
RV-8 N2046F
KR-2s under construction
