As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2937, DURING CRUISE THE CREW REPORTED AN ELECTRICAL EMERGENCY ABNORMAL MESSAGE. THE CREW PERFORMED AN EMERGENCY DESCENT AND LANDED AT IAH WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NUMBER ONE BATTERY CONTACTOR, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.