In my 2013 the only important loss is the engine has to relearn its operating parameters. That is automatic, takes about 25 miles of engine use. Some of your personalized options may need to be put back to the way that you want them.
Thanks. That's what I figured. I'm considering replacing the 12V battery proactively with the Odyssey AGM that fits. I don't mind working hot with a second battery hooked up under the hood either. I just have to decide if it's worth $230.