As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING POST FLIGHT INSPECTIONS, LINE MAINTENANCE IDENTIFIED EMERGENCY LIGHTING AFT BATTERY INOPERATIVE. SYSTEM FAULT TRANSFERRED TO DEFERRAL MAINTENANCE ITEM 45997 PER MEL 33-51-01-01. DOWNLINE, POWER SUPPLY BATTERY ASSEMBLY REMOVED AND REPLACED PER IAI SMM 33-51-00. OPERATIONAL CHECK GOOD. DEFERRAL MAINTENANCE ITEM 45997 CLEARED.