I have 8 Calb 200 AH cells that I received earlier this year (bought on AliExpress) and I recently purchased a DL24P capacity tester. The plan is to capacity test each cell as I suspect they are actually grade B cells that were sold as grade A cells. I used the batteries this summer in my camper in a 2P4S configuration and they worked good, but I was unable to really capacity test them in that configuration and I didn't have the tester until just recently. Now that the camping season in Michigan is over, I'm ready to run a full capacity test on each cell individually. I'm trying to figure out what the ideal voltage ranges to capacity test them with and at what load. I've seen several different recommendations, but is starting at 3.60V then discharging to 2.5V the best range to test with? Or is it almost as good to just use 2.7V as the cut off voltage and that will be "close enough" to estimate the total capacity? Or does anyone have any specific recommendations before I start my testing? With my cells and tester, I can't reach a .2C discharge rate (that would be 40A load). The tester will max out at 20A (about .1C) and I'd rather not run it at full capacity for 10 hours per cell (total of 80 hours of testing). I'd feel much more comfortable running the tester at say 15A. So a fully charged 200AH cell testing with a 15A load, should take around 13.5 hours to fully discharge.