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bq34z110 optimization problem (cannot finish step 7)

Other Parts Discussed in Thread: BQ34Z110, BQEVSW

I'm optimizing bq34z110 for 12 V 7.2 Ah lead-acid battery. I'm following DESIGN STEPS from datasheet and information from this forum.

Currently gauge is in UpdateStatus=5 state and the battery is charged full and relaxed. Yet, gauge doesn't set OCVTAKEN flag for a long time. 

Should I continue optimization steps anyway? 

See GG-file, logs (with somewhat incorrect timestamps) and a couple of screenshots.

4505.2014_03_18_To_TI.zip

  • I do not know whether the OCVTAKEN flag has set yet, but it it has not, then I would send an IT Enable command to force a DOD point and discharge the pack to empty and let it rest. This should allow the Ra table to update. I would log all of the parameters and setup the bqEVSW to auto-export a gg file every 60 seconds.

  • The gauge has set the OCVTAKEN flag after discharge, charge and relaxation without sending IT Enable. Thank you for your suggestion anyway.