LTO BATTERY BANK WIRING AND WIRE SIZING

[fisherus]

I recently purchased 15 LTO batteries for my battery bank that came from a Honda Fit. Each unit is comprised of two sections of 12 cells each for a total of 24 cells per unit (battery). I intend to purchase more of these after I get the present ones in operation and see how well they do. The reason I am using LTO's is that I have no way to insulate them from subfreezing temperatures. I plan to use a Sol-Ark 12k to do everything else between my panels and these batteries. The parameters of my Sol-Ark are 61V maximum, 48V Nominal and 43V Minimal. The batteries are 64.8V Maximum, 60V Nominal and 30V minimal voltage. I am planning on setting the Sol-Ark at 61V maximum, 60V nominal (float) and 48V minimal but am looking at suggestions. I am racking the batteries 5 batteries to a shelf which makes the terminals 12" away from each other. I'm thinking that if I make my cables for paralleling them I can get by with 14 inch cables. The cables between each rack will probably have to be 16 inches. With each cell producing 45W at 2.5V, what size wire should I use for paralleling the batteries? I know, everyone asks this question but I have never dealt with this type or size of batteries before and am hoping someone else has.
Thanking you in advance,
Craig

 

[bostonbuzz]

Cable size is determined by ampacity. What are the amps you will be drawing?
https://www.bluesea.com/support/art...oosing_the_Correct_Wire_Size_for_a_DC_Circuit

12kw solar charging @ 48V = 250Amps so you're looking at at least #00 or 0/2 cables. If you are not using that much, then adjust accordingly.

I'm no expert, take with lots of salt.

 

[fisherus]

Thanks! To be safe I went with 4-0 cables, little oversized but safety first. If I decide to add more batteries it won't be a problem.