I had that idea on another thread
Originally Posted by jhroof
I just had an idea, since we know the throttle position and how long the motor is on in that position, maybe we can calculate a crude approximation of mAh used. If we input the amp draw for 25%, 50%, 75%, and 100% throttle, the radio software should be able to interpolate and calculate the mAh used... Kind of a virtual current sensor.
. Like many of my ideas, it probably wasn't my idea.
You would have to calibrate on a per model basis, but I think it would result in a fairly good estimate.