Most diagrams that show four side-by-side batteries connected in series and parallel are like this: http://www.electricfence-online.co.uk/ishop/images/1047/Serial_ParallelBatteries.jpg
If these four batteries are numbered 1 to 4 from top to bottom, this example shows the positive feed coming from battery 4 and the negative feed coming from battery 1. Is there any reason to not have the positive feed instead coming from battery 2 and the negative from battery 3? (This assumes all other interconnections remain as shown.) Aren't the current paths the same either way?
The reason I'm asking is that if I can take the feeds from batteries 2 and 3 instead of from batteries 1 and 4, it will greatly help the cable routing for the slide-out battery trays in my bus.
40' Crown bus with 2kW of tiltable panels on the roof:
Eight Sharp 255W, two Morningstar TS-MPPT-60, Magnum MS2000, Champion C46540 generator converted to propane, eight golfcart batteries, and maybe a small Exeltech inverter for the fridger.