The companion 2 driver was not in use by a patient.The customer reported that the companion 2 driver did not start up properly.Companion 2 driver s/n (b)(4) was returned to syncardia for evaluation.Visual inspection of the interior components revealed no anomalies.The driver was placed on an esd workbench and disassembled for visual inspection of the interior components.Visual inspection of the interior components revealed no anomalies.The patient file was copied and revealed no anomalies.During failure investigation testing, the customer reported issue of the driver not booting up to the proper user interface was duplicated with the root cause being the 3v (b)(4) battery.The driver was not in patient use when the customer reported issue occurred.Although the driver did not boot up properly, risk to the patient would have been low because the initial evaluation of the driver demonstrated that the driver continued to perform its life-sustaining functions.Additionally, centers are equipped with backup drivers.The battery was replaced and the driver passed all final performance testing.This issue will continue to be monitored and trended as part of the customer experience process.Syncardia has completed its evaluation of this complaint and is closing this file.
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