The reported complaint of "the autopulse platform (sn (b)(4)) stopped compressions" was confirmed during the archive data review but not during the functional testing.There were no device deficiencies found during the evaluation of the returned platform that could have caused or contributed to the reported complaint.The probable root cause for the reported complaint was due to the incomplete reconditioning of the li-ion battery (sn (b)(4)) due to battery mismanagement and charging practice by the user.Zoll representative experienced an issue with downloading the archive data using the irda (infrared data association) cable, unrelated to the reported complaint.The issue was due to the partially corrupted archive log likely caused by overfilled storage buffer on the processor board.The platform software was reset to resolve the observed issue.Upon visual inspection, no physical damage was observed.The autopulse platform passed the initial functional testing without any fault or error.There was no device malfunction observed.A review of the retrieved archive data shows the li-ion battery sn (b)(4) with 1416 mah remaining capacity equivalent to four green lights was inserted into the platform.The platform was powered on twice and displayed user advisory (ua) 04 (battery charge state too low) error message.This indicates that the battery was removed from the multi-chemistry charger before finishing the battery charging cycle or during the battery conditioning cycle.The autopulse power system user guide states: do not remove a battery from the battery charger until its charging completes, or the battery's run time will be reduced.Do not remove a battery from the battery charger during a test-cycle, or the battery's run time may be reduced.If a battery is removed during a test-cycle, the battery charger will automatically restart the test-cycle the next time the battery is inserted into it.The platform was tested with the large resuscitation test fixture (lrtf) equivalent to (b)(4) lbs with good known test batteries until discharged without any fault or error.Following service, the autopulse platform passed the final testing without any fault or error.
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