I've been fighting with 2 12 volt batteries ever since I bought
the coach new. The 12 volts just don't hold up long when running
stuff off the inverter. We have a small inverter that controls only
the TV, TIVO, and Laptop, but it would drain the deep cycle batteries
I'd been trying to figure out how to get 4 golf cart batteries in
the coach and had decided I was going to have to build an extra
tray to hold them. I mentioned this to a friend of mine, (Lon V.)
and he showed me what he had done. The batteries in our coach are
under the step as you enter the MH. The step lifts off and that's
where the batteries are. The original configuration had 2, 12 volt
deep cycle on the left side (rear) of the compartment, and 1, 12
volt chassis battery on the right side (front) of the compartment.
By taking out the hold down clamps we're able to put 2, 6 volt batteries
on the left, 1, 12 volt chassis in the middle, and 2, 6 volt batteries
on the right. Lots of power, and all it required was throwing away
the clamps. Note, the chassis battery is not the original. The original
one wouldn't fit so I got one with more cranking power that was
longer, but not as wide.
How are they connected?
Negative on battery one to Positive on battery two. This makes one,
large, 12 volt battery
Negative on battery three to Positive on battery four. This makes
the second, large, 12 volt battery.
Positive on battery four to Positive on battery one, a parallel
connection, then Negative on battery three to Negative on battery
two, another parallel connection. You've now got 2, really large
12 volt batteries connected in parallel. Then connect Negative on
battery two to the Negative line to the rig, and Positive on battery
one to the positive on the rig, and you're done.