I never run the battery hard without the engine running, I have special pulleys and a bigger alternator to provide the juice...and yeah, you are right, I would of never maxed out...that will be unbearable and unreasonable....the numbers I gave was for figurative speaking, as yes, it is possible.... so you can stop now :)
But I do have a nice system....plus my whole car is dynamatted so its sounds sweet.
Since you are the genius of Navis, quick questions, I really need the ATT or Mute button...reason is not for me, but for the cops....looking for a play/pause on the screen is not fast