im due for a new battery, I hope this isn't a trend. kinda irrelevant but my last car was a 2003 lancer OZ rally edition and any time you disconnected the battery for any reason (including changing the battery) it would idle really rough for almost 10 miles exactly. just had to go for a drive and hope you didn't have to stop too much (cuz it would stall every time). looked it up once and I guess it was common, like some sort of ecu reset period