Healthy Drones is useful to an extent, but it has been noted here on the forum many times that it frequently shows cell 1 deviations. The author (Eran Steiner) picked numbers to use as the trigger for reporting major or minor deviations. As he was working on writing the original code, he took advice from members here on changes to the settings for different things, and even changed the major deviation setting a time or two.
He is the one who assigned triggers for when a cell shows a deviation or not, and his choice of voltage deviation is
not agreed upon universally by the community.
Healthy Drones
does provide interesting data and I use it myself to possibly highlight something to potentially watch for such as cell imbalance, but I personally assign
much more weight to what DJI tells me either through the app or other documentation. If the app tells me the cells are green, I trust it
much more than Healthy Drones. Same as when the app shows me if cells are yellow, etc. If the app showed some abnormality,
then I would be concerned.
All that being said, you mentioned that you are worried. That also carries a lot of weight. When you fly, you need to feel 100% percent confident in your equipment. That has a different meaning for every individual. If this battery causes you to be less than 100% confident, you should replace it and only use equipment that makes
you feel 100% confident. As
@Mark The Droner noted however, your deviation is relatively small. If it were my battery, I probably wouldn't even give it another thought.