[MetalMan]

Great idea! I wonder if this could be the basis for a RC-M battery vault?

In regards to varying the current level - couldn't you just use a lower resistance or add/remove resistors as needed, and then vary the throttle input to achieve a desired current draw? Or would the MMM not like the switching losses and thus you have chosen for it to operate in a "full throttle" orientation?

It's definitely a very simple setup that can be extremely effective. I think other Eagle Tree recorder products use a shunt to monitor/record amp draw, so if they offer one with a high enough current rating maybe that would be the way to go?