Hm, I ask myself, whether it wouldn't be possible to "abuse" such a module as an electronic load?
I have to discharge LiIon batteries from rc airplanes from time to time. If I'd attach these batteries on the input side of the module (as a source) - shouldn't it be possible to adjust the discharging - current on the output-side for a controlled discharging of the batteries? Burning the power shouldn't be a big issue, any piece of constantan, an old toaster or whatever should do.
This is maybe a weird idea, but in absence of a real electronic load, wouldn't t this be an alternative?