This set of propellers has only been used once and for a short flight. I can't confirm the battery life, but I can say that the flight performance hasn't changed from the factory props. I had no problems flying during my 10 minute flight. It hovered perfectly for the first 5 minutes of testing and flew very well after that. These are things I only use from time to time, but when I use them, I know they're going to get a lot of attention. The LEDs are very bright and easily visible from 100 feet or 30 m in the air. The great thing about this kit is that it has a 4-1 charging cable, so you can connect all the propellers for charging at the same time. This is very handy if they are not already charged.
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