As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN OVERNIGHT LINE CHECK THE EMERGENCY ESCAPE PATH LIGHTS AT ROWS 4AB THROUGH 6AB WERE INOPERATIVE. MX FOUND THE ASSOCIATED BATTERY PACK TO BE DEFECTIVE, THE BATTERY PACK WAS REPLACED AND OPS WERE NORMAL AFTER THE BATTERY PACK WAS REPLACED.