I replaced my battery too, and it's been disconnected many times as I'd just go out to start it every month to let it run up to temp, just to make sure everything was still operating as it should. It does have really old gas in it though, so I'll definitely be filling it up, and running it around for a little while, then filling again to the brim before I go for the inspection. I'll be testing for codes with my cheap scanner before I go too!