I get it - drones would not be possible without LIPO batteries. Other battery chemestries simply do not have the high discharge rate necessary. But, as we all know, LIPO batteries have significant disadvantages, one of which is it being necessary to store the battery at 1/2 charge. Since the transmitter does not require high-discharge rates, why the heck did they put a LIPO in it? How do we maintain it and change it? My guess (and this is a guess only) the transmitter considers the battery fully charged when it is at 70% or so, and dead at 30%. That way, it is always 1/2 charged. Any engineers out there who know for sure?