As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN L2 DOOR EXIT SIGN AND AISLE EXIT SIGN BATTERY CAPACITY CHK FAILED REF HAECO NR NO.9474383 - ORIGINATED BY EMP V905376, SPEC NO.B777-33-3-7019, CAB L2 DOOR HEADER EMERGENCY LIGHT BATTERY M33099 REPLACED AND INSTALLATION TEST CARRIED OUT, RESULT NORMAL REF TO AMM 33-51-06-960-802 REV.99.