I am not a rocket scientist, but this looks like the hot swap never happened. Lower power on a pump, then it completely drained battery and just stopped, engine

I am not a rocket scientist, but this looks like the hot swap never happened. Lower power on a pump, then it completely drained battery and just stopped, engine is off, end of story. It's a bit disappointing right because this hot-swap-and-then-ditch the battery maneuver is their key know-how, it helps to keep 2S engine simpler and cheaper.