I happened to be flying on a litchi app. but the data on the go app only show voltage left which was 24v.
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I use DJI recommended process to charge batteries. The "Smart" batteries are suppose to discharge to acceptable level prior to charging. Your comments sound like you work for the the DJI company. The app did not show each cell discharge, just the total voltage. if I could have seen the variable on the defective cell, I would have did something about it. Maybe you could supply this config to set up in the Go app or Lithci to see all 4 cells as you fly. Please also supply the DJI recommended maintenance that you indicate that DJI has that's different than using thier electronics to maintain their batteries!
The batteries do get charged and cycled on a regular basis. If there was a short in the cell, the "Smart" charger would not allow it to charge to full capacity which would have identified an issue! look forward to your feedback. Thanks