As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN EMERG LIGHT: EMERGENCY LIGHTING CAME ON, THEN EVENTUALLY STARTED FLICKERING ON AND OFF. REMOVED EMERGENCY BATTERY PACK #2 DUE TO NOT CHARGING AND INSTALLED NEW CUSTOMER SUPPLIED #2 EMERGENCY BATTERY PACK. OPS CKD NORMAL IAW AMM·33-52-01.