The test consists of the following
steps:
- Test is performed at room temperature. If
the cell was at a different temperature, let the cell relax for two hours at room
temperature prior to the test.
- Charge using CC or CV charging to full
using taper current (for example, C/100). Use nominal CC charge rate and CV voltage. If
another charging method is specified by the cell maker, use that method.
- Let the battery relax for two hours to
reach full equilibrium open circuit voltage (OCV).
- Discharge the battery at C/10 rate until
the minimal voltage (as specified by the cell manufacturer) is reached.
- Let the battery relax for five hours to
reach full equilibrium OCV.
Figure 8-1 shows an example of what this process looks like graphically.