For those needing some info on using one starter battery, don't! Just got home from a 2 week vacation and while away the temps dropped down to -13'C (8'F) and my truck wouldn't start. Even after charging the battery fully, it would turn over but not have enough kick to start. So I am going to put the other battery back into my battery box, I ran with only one battery for quite a while and it worked OK, but these engines seem to need a bit more oomph from the batteries to start, experiment over!
When I replaced my batteries, I kept the dual set up, but I did relocate them to just in front and above the rear axle. Centered on the chassis vs.on the side. Also plan to install a couple in-line custom fuel tanks as well.
I got two odyssey pc2150's. I think I paid $750 including shipping at the time. Theyre not cheap, and I think they may have gone up since?
Got 'em at summit racing.
If you have the space, why not keep two batteries? Unless you need the extra 65-80 lbs. of capacity?
I think my odyssey's come in around 75# each?
I have the space, I built up a box for all my batteries, 4 deep cycle and had one starter but did provide for the second battery, just was looking to eliminate one, I still could by using the "start " option on my battery separator, for now I just hooked all the batteries together until we get a break in the weather and I'll figure out what to do.