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 FROM ROW 29 ON THE RT SIDE TO ROW 33 ON THE RT SIDE WERE INOPERATIVE. MX FOUND BATTERY PACK M10699 TO BE DEFECTIVE AND REPLACED IT. ALL OPS CHECKED NORMAL AFTER REPLACEMENT.