Trouble with MGM 22418 - HELP!!!

[BrianG]

Wow, those amp values sound wayyy off! AFAIK, the only two ways to measure current is measuring the voltage drop on a series-connected shunt, or use a inductive clamp. The clamp could be a coil of wire wrapped around one of the phases, but I doubt it. The shunt could introduce too much voltage loss (especially on a 224A ESC), so I don't see them doing that either.

The only other way I could see it working is if the software watches the battery voltage drop to calculate a very rough current value. But that requires some assumptions made about the output resistance of batteries and that they are all the same, which they are not.