Proactive's most popular pump has just gotten better! With the elimination of the black booster box will allow users to achieve a higher purge volume. In addition, you will now get a longer run time with the same battery because the amp draw is now only 13 amps rather than 18 amps! Test was conducted with a 12 volt battery at 12.5 volts at battery. Leaving your vehicle running while using this pump will dramatically increase volume. What does that mean? A more continuous and faster discharge rate!