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BQ27220EVM-744: 6 Discharge Cycle for CEDV Profile with BQ27220

Part Number: BQ27220EVM-744
Other Parts Discussed in Thread: BQ27220, BQSTUDIO, EV2400

Tool/software:

Hi Experts,

I'm performing CEDV battery profiling for the bq27220 using bqStudio and EV2400, and following the guidelines for generating the 6 discharge log files (2 current levels × 3 temperatures).

I understand that all six tests must be performed on the same battery cell for accurate modeling. However, I’d like to clarify:

Is it acceptable to unplug the battery between complete test runs (after logging one discharge profile), as long as I continue using the exact same physical cell?

The reason for unplugging would be:

  • Moving the battery between environmental chambers,

  • Letting it return to ambient before the next test,

  • Managing safe handling/logging setup.

Also:

  • The battery will be fully recharged before each test.

  • It will be allowed to thermally stabilize for 2 hours before logging, as per guidelines.

I will NOT swap batteries between tests.

Please confirm whether unplugging the same cell between logs is acceptable or if it's critical to keep it connected throughout the full profiling sequence.

Thanks in advance!