The reported complaint of autopulse li-ion battery (serial # (b)(4) did not power-on the autopulse platform was confirmed during functional testing and during archive review.The returned battery failed charging in a known good multi chemistry charger and failed to power up the autopulse platform.Dents on the returned battery case was observed during visual inspection.Also, three amber lights flashed when the status button was pressed.Three amber lights flashing indicates that the battery is not fully charged.During returned battery's archive review, battery recorded a preserved mode with possible one or more battery cells were discharged below 2.0 volts followed by a battery reset and clock glitch with another preserved error messages.Thus, confirming the reported complaint.Also in the archive, battery was last charged successfully on (b)(6) 2018 and was last used/inserted in the autopulse on (b)(6) 2018.Based on the archive review, the investigation findings revealed that the probable cause of the reported issue was due to a mechanical impact as a result of a damaged/broken components on the battery management board.Returned battery has not reached its service life of three years from its date of manufacture; however, since the returned battery is non-operable, it will be scrapped.
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