As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION, FOUND THAT THE EMERGENCY FLOOR LIGHT FROM THE EXIT AFT DID NOT ILLUMINATE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NUMBER 4 BATTERY POWER SUPPLY. OPERATIONAL CHECK GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.