As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCOVERED EMERGENCY LIGHTS NOT ARMED CAS MESSAGE WILL NOT GO OFF. REMOVED AND REPLACED THE NR 1 EMERGENCY BATTERY PACK WITH AN INSPECTED UNIT AND THE NR 2 EMERGENCY BATTERY PACK WITH A TESTED UNIT IAW AMM 33-51-00. ACCOMPLISHED THE OPERATIONAL TEST OF THE EMERGENCY BATTERY PACKS IAW AMM 33-51-01. OPERATIONAL CHECKED GOOD.