Mike....Hurricane recommends that you use a 30 to 35amp discharge device such as a Turbo 35 or GFX down to .9v per cell. You can also get an Integy reactor that will discharge at 30 amps if you don’t have a Turbo. After you are done racing for the day there is no need to really discharge them for the day....unless you didn’t run a full 5 or 6 minutes on the pack. Then when you get to the track the next time throw the packs on your Novak tray before you charge them and equalize them at .9v per cell. You only need to discharge the packs after your run if you are going to run them again that day.....there is no need to tray them a second time in one day. If you are going to leave the packs for an extended period of time then discharge them down to .9v per cell and then put a 200 to 400 second charge into the pack.