Upon visual inspection it appears that a thermal event occurred.It is not possible to determine the exact sequence of events that led to the thermal event.However, there is evidence that a short occurred in the upper battery pack between the cells and printed circuit board (pcb).There was a blackening on the top of the lower battery pack and its printed circuit board (pcb).Cells 4, 5 and 6 appear to have been involved in the thermal event, likely by supplying energy into a fault in the board.Additionally there was a slight melting of the handset plastic enclosure.This concludes the investigation.Upon initial receipt of the complaint, aribex did not believe the event was a reportable event.However, during an investigation on 02/06/2017, it was determined that the event is reportable.A recall is ongoing.Reference z-2716/2717-2016.
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