Air carrier flight crew reported a passenger's battery pack exploded during flight. Flight Attendants contained the pack and flight diverted.
Synopsis
Air carrier flight crew reported a passenger's battery pack exploded during flight. Flight Attendants contained the pack and flight diverted.
Narrative
A passenger's battery pack located at seat XX overheated; caught fire; and exploded. A flight attendant immediately began fighting the fire; placed the battery pack in a thermal containment bag; and moved it to the aft lavatory. We were notified of a fire in the aft Lav by a Flight Attendant and the 15-30 seconds later; the SMOKE LAV SMOKE ECAM triggered on the warning display. We donned oxygen masks in the flight deck as a precaution and we established crew communications. The captain immediately notified ATC; [requested priority handling]; requested a divert to ZZZ. ATC quickly cleared us direct to ZZZ and to descend to FL 240. We conducted an emergency descent. Then the Flight Attendant informed us that the fire was extinguished. We continued divert to ZZZ; landed uneventfully on rwy XX; taxied clear; and stopped on Twy (Taxiway) 1. The Crash; Fire; Rescue team conducted a visual exterior inspection of the aircraft and then cleared us to taxi to Gate XX. Final taxi and shutdown was uneventful.
Second reporter narrative
At cruise FA called and said fire on board aft lav. I immediately [requested priority handling] stating fire on board. ATC gave us an immediate vector to ZZZ and issued a descent clearance. We got an ecam ' Smoke Lav smoke. The FAs moved the PED (Personal Electronic Device) to the lav where it exploded. I believe they extinguished the fire with bottles of water. They then placed it in the thermal containment bag. Approximately 3-5 minutes later the FA called and said the fire was extinguished. We proceeded to ZZZ at 320 kts. Descent and approach was normal. I cleared the runway and set the brakes while the fire crews visually inspected the aircraft. We then taxied to our gate and parked. Psgrs (Passengers) were told to remain seated while fire crews and EMTs came on board.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.