6s on M Monster

[BrianG]

Actually, most switching BECs (which is what the MMM has) tend to work more efficiently with higher voltage because of the reduced current needed. And, there is less chance in saturating the main switching coil with lower currents.

However, a linear BEC (which is what the MM has) gets less and less efficient as input voltage climbs. This type should only be used with 2s lipo max, otherwise, disable it (remove the red wire) and use an external switching BEC.

BTW: Welcome to the forums!