As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RON - CLT - EEL - FLIGHT ATTENDANT PANEL EMERGENCY POWER SUPPLY UNIT 'INT LOAD EMER L' FAULTS. EMERGENCY LIGHTING SYSTEM WILL NOT TEST. FOUND HIGH RESISTANCE BATTERY CONNECTION AT EPSU. MAINTENANCE REPAIRED CONNECTION AND ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK.