I'm not sure how this will help ya but here's the setup I did in my Monte Carlo

Not quite a finished product yet but functional... two of the batts are on one bank and the third is on the other... The eventual plan is put all three on bank 1 and a 4th starting only battery on the other side of the boat as bank 2.
The single starting battery will be for both engines and the generator. And the 3 will be for house functions only unless I need to flip the switch for a dead starting batt.
Attachment 5357
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been a wile since I've looked in there, but heres how i did mine
http://i112.photobucket.com/albums/n...npartment5.jpg


http://i112.photobucket.com/albums/n...fuelfilter.jpg

they sit on a shelf that i glassed in

http://i112.photobucket.com/albums/n...tment001-1.jpg

With the weight of the big Opti out back my boat was slow to drain any water on deck. Moving the batteries up front put her right back in balance. I used the now empty spot in the back to mount a milk crate so I can keep all kinds of extra fluids,cleaners,prop wrench,etc.

I just sent a personal email to you.

I have one battery - in the transom battery storage section. Doesn't cause a weight issue at all, but probably cool to move that approx. 50 lbs forward.

I have duals in the back--one on each side--pain to get to, but are not all batteries.

I have thought of moving them up front as well(I would run a 2/0 battery cable from there to the motor-only about$105 for 25') but I would lose some iceing and storage for my tuna runs, and the pounding they would take versus the transom is a pretty big difference---my .02

Cut a hatch in the deck between the fish box/storage hatch and the cuddy entrance. Put a floor in it with a cut out to the bilge and mounted an automatic 1500 GPH forward bilge pump in case the aft one goes out or I'm in a really deep doo doo MJ wave over the bow type situation. Running two Interstate group 24 1000 cranking amp starting batteries on a 1-both-2-off switch mounted to the forward bulkhead with 1 gauge cable running back to the engine through the starboard rigging rings. Good use of unused space and moves some weight forward off the stern. Easy to get to and doesn't take away from the cuddy in deck storage.

Got the hatch idea from Phatdaddy, the battery setup from Spareparts, the wire gauge from MJ.

Another great point for you guys on batteries--One Good/high cca rating battery and a deep cycle for the second battery with a high reserve capacity.

I handle charging, starting and battery issue's or prevention there of for a living.

capt pete, can you email your pictures to me? my computer will not pull them up. going to look at them on my phone. Would like to move batteries in my V20 to the cabin also. [email protected]

You've got mail.