Battery used - standart Eachine 30C 150mAh
Test results:
Cutting off 2 blades of standart 4 blade propeller increases efficiency and flight duration up to +25%. You may lose some of the agility but will greatly increase flight times.
Flight duration:
4 blade propellers: 4:46
2 blade propellers: 5:58
Low voltage warning:
4 blade propellers: 2:38
2 blade propellers: 4:56