As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 4049 - DURING INSPECTION, CREW NOTICED EMERGENCY EXIT LIGHT OVER FLIGHT ATTANDANT SEAT WOULD NOT COME ON. MAINTENANCE REMOVED AND REPLACED THE NR 2 AND NR 3 EMERGENCY BATTERY PACKS. OPERATIONAL CHECKS WERE GOOD. AIRCRAFT RETURNED TO SERVICE. (X)