As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 4590 DURING PREFLIGHT INSPECTION THE CREW NOTICED THE CABIN EMERGENCY LIGHTS WERE INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED EMERGENCY BATTERY PACKS IAW/CRJ-700 AMM33-51-17. THE OPERATIONAL CHECK WAS GOOD. PART NUMBER: 2013-1A, SERIAL NUMBERS: 79481, 104583, 82398 AND 72758. THE AIRCRAFT WAS RETURNED TO SERVICE.