How would one go about this?
What kind of alternator should I switch too? I've seen the welding systems
with the super heavy duty alternators, can they handle a constant high-draw
like this for charging two batteries?
Anyone have an isolator that they particularly like?
I would like a very 'sophisticated control center, where the second battery
is more an 'accessory' battery. IE if I want to sit and listen to the radio,
switch over to batt II and do that. To run the truck, switch over to batt I.
I'd like to make it so I can use this truck as a camper if you know what I
mean, so I'd like to have say the 'house' and the 'car' battery. But I would
also like to be able to switch over to the second battery and drive away if
the first is dead, and then have both of them charge. Basically I would like
it to be similar to the charging system in a boat.
I run dual batteries on a truck used to plow snow. Depending on the snow, it
could run 8-10 hrs to get the route done. I can't remember if its a 95 or
110 amp alt but I've had no problems keeping the batteries up. Hope that
helps the alt part of your question.
A friend had his '84 chevy setup on dual batteries. The second battery came
out of a D9 Cat and he had it in the back of the box for weight
distribution. That battery would pound the tunes all night camping, then the
"little" one would fire the truck up in the morning. Or winching, or lights,
what ever he wanted.
I have done it for years.
dual battereies charged with the regular alternater(from 65 amp old fords to
110 amp chryslers) and never a problem.
just use an older ford starter solenoid for switching from one battery to
the others with standard heavy battery cables. a switch is used to flip the
solenoid so either battery can be used.
also have a good isolater between the alternater and the batteries for
charging and keeping up the batteries.
draw a schematic and work it out.
or later i will.
I know. I want it. Thats why I said "I want a..." not "I think I need
Thanks for the ideas. I have a schematic that I just drew out for my
lights that I am planning on scanning and posting just for a sanity
check. Again no one will like it because it's the way I want it - but
at least they should see reasons why it wont work.
You don't need to switch.
I've seen the welding systems
I did a dual battery setup in a '98 Chevy 1/2 ton (gas). I never found the
need to isolate the extra battery. I looked in to it, and thought to just
use a heavy duty diode. It will only allow current to flow one way (charge).
Another place you could look at, if you want to go heavy duty, is talk to a
semi parts supplier (Freightliner, Peterbilt, Jobber....) and see what they
use to isolate the Proheat (or equivenalnt) battery.
Here is the Alt I put in my 96 C1500. I bought the 200amp model
And here is an easy to install Isolator
2 optima batteries you'll be good to go
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