This is one of the few tests I have seen on an LFP battery where they took it to 100% DOD every cycle.. The cells were made by GBS and the cycle tests were to 100% depth of discharge. The tests were conducted at room temperature and the cell was discharged at a .5C load or 20A on a 40Ah cell.


At 2000 cycles, to 100% DOD, these cells were still putting up 35Ah's or just 5Ah's shy of the as new capacity rating. Even for a lab type test this data is quite amazing. As I always suggest though, take this "lab data" with a grain of salt because a test like this ignores real world temperature effects as well as calendar life degradation. In the real world the cycles are done much slower and if your regular battery temps are in excess of 80F I can guarantee you will never get or see data like this in the real world.




Image Courtesy: Elite Power Solutions