As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AIRCRAFT NOT GROUNDED) (DEFECT DISCOVERED DURING AC HEAVY MX VISIT) NRC 7000-0012: EPSU BATTERY BETWEEN L/H OVERWING DOOR 11WL INOP. / AT L/H OVERWING DOOR, EPSU BATTERY 11WL REPLACED AND TESTED SERVICEABLE IAW AMM 33-51-38-000-002-A/400-002-A.