The patient data file was reviewed and revealed multiple battery alarms and notifications that could be either from lack of recognition, as reported by the customer, or from the external batteries being removed as part of the system checkout.The customer did not return the external batteries used at the time of the reported issue.During investigation testing, the companion 2 driver passed all functional testing, including additional testing using several external batteries that have previously met performance requirements.The root cause of the companion 2 driver not recognizing the external batteries could not be determined.The driver performed as intended with no evidence of a device malfunction.This issue will be monitored and trended as part of the customer complaint process.Syncardia has completed its investigation and is closing this file.Ce 5752 (b)(4) follow-up report 1.
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