Went out to test a NCR18650b (4S4P) battery pack we quickly slapped together in our floppy Skywalker (taken a lot of hard landings). Our hope was to get around 90 mins flight time. The wind was constantly hovering around 20kph, so we never really went for distance.
After some time in the air we got to 60km distance, then 70km, etc. At 90km we decided to fly the battery until the motor cut out, luckily it didn't - went to to 13.2V under load.
Plane: Skywalker 2014 1800
AUW: around 2kg, not sure
Motor: Sunnysky 600kv X4108S
Prop: APC 12x6
Batteries: 4S4P NCR18650b 13600Mah
Battery weight: 812g
Total Distance flown: 102km
Weather: Wind 20kph, sunny, 30°C. Altitude: 1634m ASL
Time flown: 129