I received 4 cells, 230 Ah, from the USA warehouse yesterday. The battery cells are in great condition, shipped from Texas via UPS. They came with matching 6mm studs (with sufficient height to handle almost any busbar arrangement), matching bolts, and busbars which I feel to be inadequate.
In the first picture, I show the uncompressed battery pack being sort-of balanced by a 6A, 14.6v charger. (I adjusted the Daly BMS parameters with Sinoweath: I reduced the "full" cell voltage to 3.60v, reduced the minimum current sensitivity to 300mA, reduced the "balance start" voltage to 3.4v, and slightly increased the balancing current). It seems to be working well, as monitored by either Sinoweath or the Android App. (Cell Voltage differential is reading either .002 or .001, while pack voltage slowly increases.)
When my two steel compression plates arrive (tomorrow), I will be using 4x compression springs and 3/8 threaded rod to compress the pack, it needs a bit more than 600 lbs. But, when I do that reassembly, I will also preplace the bus bars. As show in the second picture, the supplied bus bars are each a pair of very thin "bars", held together with shrink wrap. The total thickness (both thin bars together) is perhaps 1.5mm, I didn't bother to measure it.
In contrast, the "proper" bus bars which I will install when I compress the pack have about 2-1/2 times that thickness. And of course, the supplied "thin ones" have 4 layers of plating between the two of them, while the "proper" bars are plated only on the outside. The copper cross-section of the good ones is roughly 3x greater.
I will SWAG the provided pairs to roughly similar to AWG-6 stranded wire, which starts to contribute significant voltage drop (via unwanted heat) at current above about 50A. In my 12v pack, there are 3 of these bus bars at roughly 2 inches each, all warming up the cells when I run the inverter with moderate loads. Thus my replacement. These "better" bars were designed for Eve 270A cells, and I will need to drill one new hole into each one at shorter length, fitting the 230A cells. They should be good for 3x the current.