Ok flew today, 14 minutes 12 seconds. Fully charged battery ohm meter read 15.84 v. 3.96 v per cell
On the St16 it showed 16.4v.
flew around slowly then 1/2 rabbit mode to 390 feet. Whole flight in recording mode. landed at 14.7 volts.
St16 then showed 15v at idle before shut down.
30 minutes later checked battery with ohm meter it showed 14.24 v? 3.56 per cell
Oh, ground winds howling at 2 to 3 mph, winds aloft at 400' about 15mph.
Cloudy and wind chill at 75 degrees.
I run it down to 14.1v usually getting 19minutes with the 45 dollar 8000mah 4s multistar and my tray.