Just got out the 2-cell, Don Shulman's 1200mAH, 8C, Li-POLY out from the Charger and it measured 8.07 Volts from post flight of 7.55 Volts "or" in other words about a 1/2 Volt drop for a 20 Minute flight!
(Actual Delta was 0.52 Volts)
80% of 1200mAH = 960 mAH
960 milli- AMP -Hour / .333 Hour = 2882.88 Milli Amps
"or"
2.882 AMPs [X(] = Average AMP Draw!!!