What is the IEC standard cycle life test
December 25, 2018
The IEC specifies the standard cycle life test for NiMH batteries as:
After the battery is placed at 0.2C / 1.0V / support
01) Charge at 0.1C for 16 hours, then discharge at 0.2C for 2 hours and 30 minutes (one cycle)
02) 0.25C charging for 3 hours and 10 minutes, discharging at 0.25C for 2 hours and 20 minutes (2-48 cycles)
03) 0.25C charging for 3 hours and 10 minutes, to 0.25C to 1.0V (49th cycle)
04) 0.1 C was charged for 16 hours, left for 1 hour, and 0.2 C was discharged to 1.0 V (50th cycle). For nickel-metal hydride batteries, after repeating 1-4 for a total of 400 cycles, the 0.2 C discharge time should be greater than 3 hours; for nickel-cadmium batteries, repeat 1-4 for 500 cycles, and the 0.2 C discharge time should be greater than 3 hours.