Results of actual cycle tests on LiFePO4 (Winston 40Ah cell):
https://agronomy.emu.ee/wp-content/uploads/2017/05/Vol15SP1_Papezova.pdf
"Two tests with 1,000 and 1,400 discharge cycles were performed at two four-cell batteries of the type WB-LYP40AHA Winston Battery during one-year period of time. The lifetime of the first battery with 100% DOD relative to 80% of the nominal capacity of the worst cell was set to 950 cycles. The lifetime of the second battery with a DOD of 50% relative to 80% of the nominal capacity of the worst cell was calculated on 3800 cycles according to the measurement results."
https://agronomy.emu.ee/wp-content/uploads/2017/05/Vol15SP1_Papezova.pdf
"Two tests with 1,000 and 1,400 discharge cycles were performed at two four-cell batteries of the type WB-LYP40AHA Winston Battery during one-year period of time. The lifetime of the first battery with 100% DOD relative to 80% of the nominal capacity of the worst cell was set to 950 cycles. The lifetime of the second battery with a DOD of 50% relative to 80% of the nominal capacity of the worst cell was calculated on 3800 cycles according to the measurement results."