The astral device was returned to resmed for an investigation.Review of the device data logs confirmed the reported complaint and revealed an error message related to a battery charger fault (sf180) and a battery inoperable alarm.Based on all available evidence and complaint investigations of a similar nature, the investigation determined that the sf180 and internal battery degraded warning alarm were due to an isolated component failure within the device battery assembly while the internal battery inoperable alarm was due to an intermittent connection with the battery.Resmed's risk analysis for this failure mode concludes that the risk is acceptable.Resmed reference#: (b)(4).
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