Mamba Max and 1518 1800kv?

[brijar]

A123 cells charge to 3.6v per cell, but drop very quickly to 3.3v per cell after a load is applied, so it should only be about 16.5v for a 5s pack a few seconds into the run. I have heard that people can run 5s and even 6s lipo on a Mama Max, though I don't know what it takes to do that. I should have mentioned before that I do have an external BEC that I will use. To disable the MM's BEC, do I just cut or unplug the red wire going to the RX?