As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2699, DURING PRE-FLIGHT INSPECTION THE CREW REPORTED THAT THE EMERGENCY EXIT LIGHTS WERE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE NR 4 EMERGENCY LIGHT BATTERY PACK, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.