Qn#(b)(4).The customer returned one 005853300 rusch mri handle batteries pack of 1 for investigation.Visual examination did not reveal any obvious defects or anomalies.Additionally, the customer stated that only one battery was received in the packaging and they were expecting two batteries.It should be noted that this product is a "pack of 1", so the correct quantity was packaged and received.Functional inspection was performed per mri laryngoscope ifu by inserting the battery into a known good lab inventory rusch mri laryngoscope handle and attaching a known good lab inventory blade onto the handle.The led lit up and stayed lit for 5 minutes.The light did not turn off or get dim.The complaint cannot be confirmed.The battery voltage was measured to be 3.18 dc volts which is consistent with the nominal voltage.The device history record of lot 21100101 was reviewed and no issue that could have contributed to the reported failure was noted.The device was manufactured according to release specification.The instructions for use (ifu) provided with this device advises the user, "check battery pack is inserted correctly into the handle.Arrow should point into the handle cavity.Do not expose the battery to water or heat.".
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