As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTING SYSTEM BATTERY PACKS DO NOT ALLOW LIGHTS TO REMAIN ON MORE THAN 20 SECONDS, SHOULD REMAIN ON 15 MIN. POSSIBLE BATTERY PACK PROBLEM. COMMANDED BY MCC TO REPLACE EMERGENCY BATTERIES AT FS 280.00 AND FS 310.00. RAN APU FOR 1HR TO PROPERTY CHARGE BATTERIES. PERFORMED OPERATIONAL CHECKED EMERGENCY LIGHT, OPERATIONS CHECK GOOD. ALL WORK DONE IAW Q6SOS AMM CHAPTERS 33-51-00, 33-51-01 AND 49-10-00.