step 1 | Capacity and DC impedance calibration at room temperature (25˚C) |
step 2 | Constant current and constant voltage charging at ambient temperature (25˚C) |
step 3 | Hold the battery for 5 hours at low temperature (X˚C) |
step 4 | 0.5C constant current discharge at low temperature (X˚C) |
step 5 | Hold the battery for 5 hours at room temperature (25˚C) |
step 6 | Constant current and constant voltage charging at ambient temperature (25˚C) |
step 7 | Hold the battery for 5 hours at low temperature (X˚C) |
step 8 | 1C constant current discharge at low temperature (X˚C) |
step 9 | Hold the battery for 5 hours at room temperature (25˚C) |
step 10 | Constant current and constant voltage charging at ambient temperature (25˚C) |
step 11 | Hold the battery for 5 hours at low temperature (X˚C) |
step 12 | 2C constant current discharge at low temperature (X˚C) |
step 13 | Capacity and DC impedance calibration at room temperature (25˚C) |
step 14 | Transform X, repeat step 2~ step 13 until all cryogenic temperatures are tested |