Definitely ! what i mean is what are the best cells (Like matched and batched cells, by the way do you have any numbers for matching like what should be the tolerance between cells ),When people ask for the "best", they rarely mean the best. They mean the best for a low price, so I'll assume that's what you mean. After a lot of research I built my batteries using Eve cells, 304 ah and the 280k long life cells, 32 of each. They're working fantastic and the price was reasonable from Docan, with quick delivery and top quality. Other people make different choices, but it worked for me.
There is no best battery pack. It only depends on your budget. If you mean the brand of the battery, EVE and Lishen are good, and they are also the batteries used by many people in the forum. If you need something better, CATL and CALB can also be considered. Of course, it depends on your wallet. In addition, you should also need to choose the busbar (or your business has already selected it for you), BMS (to ensure the safety of the battery, prevent overcharge and over-discharge), balancer (long-term stable balance charge), and charger (no need to explain Bar). A more practical battery pack should include these.
I am considering 230 AH cells for EVEI put 16 280 ah cells in my Rv, and they barely fit in the space they had. I have more than enough power, and i probably could have went with 230 ah cells for a much easier construcion.
Watt hour requirement, size constraints and weight constraints are real.
I just recomend you get your cells from a reputable dealer. Someone says toucan has various cells in a warehouse in the states. Not who I bought them from, but worth looking into.
from your experience JK BMS with active balancer (2A or 4A balancing?) 0.5C BMS ?You know, in the beginning I also cared a lot about this. Trying to make the 'best' pack. Nowadays I don't: take the cells, top balance if needed (or actually just put a JK BMS on it with active balancing), put them in a case, and put them to work. This even works with 'grade B' cells that don't pull full capacity. Granted, having matched and batched cells are nice, but in the end in solar applications where you have relatively low currents, and the battery sits full often, it's not that big a deal. I'll probably get some non-matched cells from Luyuan or some other vendor for my next 32 cells. If you need more capacity, just add more batteries - easier than trying to get the absolute max out of a battery.
Where are you going to use them? 16pcs can make 12V, 24V, 48V systems. If you consider using 230Ah, it is recommended that you build it into 24V 460Ah.I am in the process of designing 16S LiFePO4 pack.
What do you recommend to have in this battery pack.
What would make the best lithium battery pack.