As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
B777-33-3-7019 DR L1 M33093 EMER LIGHT BATTERY TEST FAIL. TRANSFER REFER NON-ROUTINE WO.1821528 AND ORIGINATOR V898181. DR L1 M33093 EMER LT BATTERY REPLACED AND TESTED NORMAL AS PER AMM 33-51-06. WORK ACCOMPLISHED BY MECH V898181 AND INSPECTED BY V896958