Great, thanks! It is on our deck right now, propellers on and running! It's too windy to try to take off, plus I don't have a license. The ST10+ still says zero sats, but the drone side says 15 sats.That value is the amount of charge added to the battery to reach full charge.
The prior charge that added 6300 mAh or more can happen due to balance charging. This is more apt to happen after long storage where the individual cells have discharged to different voltages. Balance charging starts after the pack reaches full voltage, but the individual cells have too much differentiation in voltage. The charger adds to the entire pack for a short amount of time then discharged the cell with the highest voltage to keep it from overcharging. This process repeats until all cells are at full charge and voltage differences are within tolerance.
It is likely the packs are not as healthy after extended storage, but exercising them will help restore some longevity.
I never would have gotten this far without help from this forum! I'm going to try to run down the battery to storage level. I think the battery was at 12.5 volts when I put it in and I left it on for about 2 hours near the window. It has been outside, running for1:30 minutes and the battery is now at 11.8 volts. The camera is not attached. I will try that next.