I have recently purchased a Syma X8HC Quadcopter. The controller takes 4 AA Batteries. I wish to ask, Is there any reason that a rechargeable 6-7 V. LI-ion or Lipo battery pack could not be used instead of the throwaway AA's. I also would think one may have to utilize a voltage regulator to maintain the 6V input voltage if say a 7V battery would be an acceptable choice. I also wonder if the battery life in such an application would be better than that of 4 AA's.
Li-Ions are 4.2V fully charged X 2 = 8.4V. Same thing with a 2S LiPo. Most folks, myself included, would just opt for some rechargeable NiMH batteries.
Thanks for the advice. I just was entertaining using a different power source that was easier on the Ol' pocketbook. I've never really had to much luck with NiMH batteries and less so with NiCD's. Did find a gent on the internet who uses a 2S 2000mAh Lipo to power the transmitter for a Hubsan Quads X4-501s. If I recall correctly the standard Hubsan Quads transmitter requires a voltage regulator to be installed, where as the advanced Hubsan Quads transmitter for the x4-501s has a regulator already installed.
If you see the schematic of Syma TX ( is not the last version , but more or less......) you have two possibilities : NMH battery or 1S LiPo More info : http://wheels.forumcommunity.net/?t=57582068