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How to extend the flight time and the remote control range of syma x5c-1 quadcopter
Super Easy Syma X5C Range Mod Hack Extention
My oldest set of four battery's have a flight time of 5mins, 3.7v. 720 mAh. My new set (same size) have a flight time of 8.5mins. Can my old set be revived?. Cliff.