What is your point? You are advocating everyone should drop $3000 on a battery tester? We can read the spec sheet too. FYI, you can parallel the 40 amp testers. I have 4 of them myself. Add in a busbar and you can draw 160 amps from a cell, or 100 amps from a 12v battery.Its been a while for this topic but i noticed a possible error.
For the LF280K EVE cells the datasheet states that 280Ah is determined by loading to 3.65V (takes ~3h for "new" cells with 40A)
Generally the producer states how the Ah is determined.
Then you are to discharge with 0.5C which would be 140A