I bought two case of the Navitas 25 A/h batteries when they popped up. They have been resting comfortably at half charge but I am now ready, copper bus bars in hand, to assemble them into three packs. I plan on two batteries of 24 cells (150A/h) and one of 12 cells. The big ones are for the house (sailboat) bank and the smaller as the starter battery for the two outboards. This layout is ideal for the space I have available, though if I am way of base I can possibly make two long skinny packs work.
Below is my proposed configuration for the large packs. Any suggestions, thoughts or comments welcome.
I tested the voltage and resistance of these when I got them and 29 of each box of 30 was at identical voltage and resistance. One cell in each box was fractionally different. And please excuse the primitive drawing, I could not find the original drawing I did. The blue scribbles on the bottom right are leftover from something else and are irrelevant to the pack. I plan on compressing these between fiberglass/foam composite board using stainless all-thread, then mounting them in closed boxes of the same foam/glass composite board.
Below is my proposed configuration for the large packs. Any suggestions, thoughts or comments welcome.
I tested the voltage and resistance of these when I got them and 29 of each box of 30 was at identical voltage and resistance. One cell in each box was fractionally different. And please excuse the primitive drawing, I could not find the original drawing I did. The blue scribbles on the bottom right are leftover from something else and are irrelevant to the pack. I plan on compressing these between fiberglass/foam composite board using stainless all-thread, then mounting them in closed boxes of the same foam/glass composite board.