All Roadster

PriorityStart! is an automotive computerized on/off "switching" system protecting battery voltage and starting power. If battery voltage drains below 11.9 volts when the engine is off, it automatically disconnects the load. The battery voltage immediately recovers. It is not a battery charger/booster or plug in device used after the battery has already dead and damaged. PriorityStart! operates only when needed... providing automatic protection so you can get started. No more dead battery problems from lights left on Pays for itself the first time you use it! Maximizes battery life. Easy to install in just 15 minutes.