I bought my Passport sound system from Guitar Center and I want 2 bring to a picnic area where there is no electricity. I don't like to employ a generator because it's too expensive. Can you suggest a battery system for 4-6 hrs so I can play my music

The Only suggestion that I have for you is a battery operated bluetooth speaker from Walmart that is probably less expensive than the system you bought at Guitar Center. Weigh your options and check it out and make your own decision. By the way, the speaker I'm referring to is the large Karaoke Speaker that lights up and has over 100 Watts!

Wish I could help you, try looking for a low cost generator from Home depot or Loews or even Menards.