So I just finished my CS6, got the 2axis working etc. Tested it out pre gimbal and I had solid 20 minute flight times no payload. I go to test today with a battery, 70d and 10-22 EF-s (total payload around 2.7lbs). My Quadropower 6200 4's hit Undervoltage in about 1 minute of flight. My old MK frame would fly the same thing for 10 minutes easy. All I can think is my batteries are damaged. They go from 16.8 to 15.4 in the first 20 seconds. Same goes for gimbal, no camera. MK3638 motors 2.0 BL's 2.5 fc GPS/Navi. Using 14x4.7 props.