Well - I'm not saying ur experience is normal - but I do know thw factory batteries on the 2003 Acords are REALLY small, and not many amps at all. I put in an Optima Deep-Cycle in my coupe - and have never had problems letting my car sit for 2 weeks. BUt I expect that from that battery.

I'm not saying you need a new battery or an expensive Optima at that - but, surprisingly my car doesn't turn over as many times before stating when I put it in - but the ain reason I got it was becasue I put some more power drawing sound stuff in.