As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 3251 THE RAMP REPORTED THAT WHILE CLEANING THE AIRCRAFT EMERGENCY LIGHTS FROM ROW 10 AND AFT AND OVERWING EMERGENCY LIGHTS WERE INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 3 CHARGER AND BATTERY IAW EMB AMM 33-50-04. REMOVED AND REPLACED THE NR 4 CHARGER AND BATTERY IAW EMB AMM 33-50-04. THE OPERATIONAL CHECK WAS GOOD AT THIS TIME. THE AIRCRAFT WAS RETURNED TO SERVICE.