Does listener lose memory of alarm sound if you leave battery out too long?

Hi All - I followed what I had read here and took the battery out of the listener while testing our smoke/co detectors (Nest). I left it out for about 15 minutes then put the battery back in, and closed it up. I had a tamper alert in the app so, following instructions found here, again... I opened and shut the listener. Done. All good. Says it's listening. My question is, by taking the battery out and leaving it out for 15 minutes, did that erase the listener's alarm sound training? Do I have to do it again? (hope not) Thanks!