Re:load v2 is an adjustable constant-current load.
A really cool thing is that it is self powered and can go to 3.3v keeping it’s current limiting capabilities. I went for the 0-6 Amp version since the price difference is minuscule and it seemed more useful in the future. According to the documentation it can handle 20 W or more with the larger heat-sink. Who does not like having some extra leeway…
Please see the full review as well as build process in my YouTube video: