well, Generally for receiver/transmitter use balancing really is not required because of the low current draw. still advisable though. I would reccomend any lipo being used for anything other than receivers/transmitters to be balanced at every charge. best bet is not to over charge/discharge and maybe you can get away without balancing(for a little while anyways), I prefer to balance my cells for added security and safety especially during charging.

Just my 2cents about it anyways, Maybe someone else can help or will explain it better.

good luck...