Lots of stand alone dischargers available for 2S but I can't seem to find any for 1S.

With some electroncs easy to make

So is this redneck set up LOL. But in my internet searching have never seen a DIY 1-S discharger with adjustable discharge rate and voltage cutoff. If you can share a link I'd appreciate it.

Easy to design. I would go for an OPAMP to do a voltage comparisation with a reference voltage and a simple flipflop circuit as start/stop. Controling a relay and some resistors wits some switches to select the discharge rate.

My home build 2S discharger is basically doing the same but using a LiPo alarm as low voltage detection.
Building a discharger

Thanks for the link. I'll check it out after my race tonight.

I just run my cells down on vehicle. Only takes a min or two at full speed. I have made a light discharger too. If one small bulb doesnt discharche fast enough add another in parallel. If batt gets warm lose one bulb.

Sometimes that is not feasible due to various of reasons...track closed, started pouring outside, its getting late etc. At that point a discharger is needed to bring the battery down to storage voltages.