As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 3073 - GRR - FLIGHT CREW REPORTED NR 2 MAIN BATTERY OVERTEMP INDICATION ON EICAS. CREW LANDED ACFT UNEVENTFULLY. MX REMOVED AND REPLACED NR 2 MAIN BATTERY AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE.