I fly an M2P and I have had zero battery problems with the three that I rotate through the aircraft. However, on recent checking in Airdata's Power section, I noticed in the 'battery cells' section that cell #4 was showing a noticeable difference from the other three. It is nudging into the amber / orange area. Has anyone else seen this sort of anomaly. My initial reaction is to keep a more careful eye on performance going forward and to clean all the battery terminals in the drone, charger and individual batteries to see if a poor connection might be an issue. Any thoughts from the community..?