Help! Slow Battery Discharge

From what I read, most new cars have enough parasitic loads to run down the battery in 2 weeks. Airport parking lots routinely jump their customers. Consider your car modern.

I put a Battery Brain on most of my cars (blue box in my Avatar). I like the one w/ remote for anti-theft too. I leave my car at work and bike home so if it doesn't start when I return in the morning, a headache. The Battery Brain has saved me many times. Whenever I had one trip regularly, I had Autozone check the battery and always bad (couldn't hold charge, ...).