As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF NR L/P:9464014 - SPEC NO.B777-33-3-7019 - A ZONE L/H FWD CEI LING AREA EMERGENCY LT FOUND LOW CAPACITY. POWER SUPPLY - BATTERY M33424 AT DOOR 1L REPLACED AND OPERATIONA L TEST FND NORMAL AS PER AMM 33-51-06-960-802 REV.84 (OFF P/N:D717-01-100 OFF S/N:412213; ON P/N:ADD717-01-100 ON S/N :215410)