[BrianG]

The only way to do a real test would be some type of automated setup that places a consistent load on the motor for the whole run, and applies brakes with the same intensity and duration. There could be slight variations in each run (exact grip of terrain, acceleration ramp, how slow you brake before accelerating again, etc) which will skew the results. The definition of a good test is comparing using a consistent and repeatable process.

Any regen braking will be minimal when compared to pack capacity to be sure. I would be surprised if regen braking exceeded 5mAh to be honest. For one, the voltage generated while braking has to exceed battery voltage for reverse (charging) current to flow. If braking gently, the generated voltage may not be high enough to generate any charge current, or just slightly over the battery voltage and won't generate appreciable amounts of charge current. Two, the duty cycle (time braking vs time running) of braking vs running is tiny, probably in the 5% range or most likely less. Three, our motors are most likely way more efficient when in "motor mode" as opposed to "generator mode".

Again, this isn't a thread to say we should all use motor brakes to get more runtime, this thread just says "see, this ESC does have regen braking". I personally prefer motor braking because it is "fade-free", simpler, and layout is cleaner. I really wouldn't care if motor braking used more power than mech brakes as long as it didn't exceed 5%.