This is a project that I am building for my radio control cars. It is a high current battery discharger with auto cutoff. The goal is to discharge the battery at 20 amps until the battery reaches 5.4 volts. Then the discharger needs to shut off and clamp off so that is doesn't begin the discharge again when the battery voltage rises back above 5.4V. I have some ideas about how to do this, but my main dilema is my load. I don't really want to buy power resistors, so I plan on using FET's as the load. It will require a large heatsink and some descent FET's. Any Ideas? :?: