Deal on a battery too good to be true? Look more closely and you'll find that chinese manufacturers are combining 16 groups of 314ah LFP cells in parallel without fuses. What happens when three cells are in parallel and one fails? Depending on the failure mode, the other two cells can dump their power into the defective one making a lot of heat.

Here's a screen shot from a Docan YP-900 46kwh battery. Notice the buss bars connecting 6 cells? Don't do this please. Get a battery that has MB56 cells if you need a battery larger than 16kwh.