Did you get your IMA battery repaired or replaced? I'm in Austin and had my 2003 HCH throw a 1449 code (battery overheated) today. The Honda manual I have says the dealer will try to sell me a new one so I'd like to hear how you fared. I've got about 110k miles and a CVT.
Call me if you'd like to discuss the costs, etc related to fixing your battery. There are new options available that aren't on the website yet. Figure that the repair will be cheaper than replacing your catalytic converters would be.