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 4R EMER LIGHT BATTERY M33408 CAPACITY CHECK FAIL TRANSFER REF. NON-ROUTINE HX NRC ZHG501715 AND ORIGINATED BY EMP V898181 DR 4R EMER LIGHT PWR SUPPLY M33408 CHARGER AND BATTERY REPLACED AND TESTED NORMAL AS PER AMM 33-51-06 WORK ACCOMPLISHED BY MECHANIC V898181 INSPECTED BY V896958 ADD EMP:V898181