Avance Cs2, Avance Cs2 pro anesthesia devices and field replacement batteries for Avance Cs2, Avance Cs2 pro, Avance, Amingo, Aespire View - a potential battery issue can result in premature shutdown of the anesthesia device in situations where ac mains power is lost and back up emergency power is not available. Recall start date: May 19, 2022