As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A MAINTENANCE INSPECTION, THE NR 2 EMERGENCY LIGHT BATTERY PACK WAS FOUND TO BE NOT HOLDING A CHARGE. MAINTENANCE REMOVED AND REPLACED THE BATTERY PACK, OPS TESTED WITH NO DEFECTS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.