Syma X5C-1 drone fly away

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Short video of the fly away of my SYMA X5C-1. I received new 750Mah batteries, I accidentally went way to high with 35% power on this battery of course with the camera running, it started to blink about 150-300 feet up. Was lost for two days as rain poured on it here in florida..IT STILL WORKS LIKE IT WAS NEW!! I am amazed. The battery is crap now but the drone works great with a new one!