As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
B777-33-3-7025 LLAR BACKUP LIGHTS BATTERY PACK DEEP CYCLE TEST FAIL. TRANSFER REF. NON-ROUTINE WO.1097714 AND ORIGINATED BY EMP V902113. LLAR BACKUP EMER LIGHT BATTERY REPLACED AND TESTED NORMAL AS PER AMM 33-51-06. WORK ACCOMPLISHED BY MECHANIC V898181 INSPECTED BY V896958.