B737-700
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 150; Flight Crew Type 10000
Communication Breakdown
Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Hazardous Material Violation; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Overcame Equipment Problem; Flight Crew Returned To Clearance; General Maintenance Action
Human Factors
Climbing out of ZZZ en route to ZZZ1. We received an ACARS message from Dispatch. 'Ops Agent did not let us know until now. There is HAZMAT onboard in Bin A and it is 1 AED Lithium Battery 7 LBS'. We did not have HAZMAT paperwork on board for the battery. We acknowledged the message and asked Dispatch if they informed ZZZ1. They said they were informing them at this time. We continued to ZZZ1; with no further issues.
OPS called after flight was airborne to let me know HAZMAT was on board in Bin A. One AED lithium battery weighing 7lbs. They stated there was a breakdown in communication. I then let the crew know of the HAZMAT details and also let ZZZ1 OPS know for the arrival. Remark on the load sheet for the Captain notifying them of the HAZMAT is not there because I did not know of the HAZMAT prior to departure. [Suggest] better communication between Ground OPS/Flight OPS.
B737 flight crew reported in flight notification from Dispatch regarding undocumented Hazmat onboard.