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 R4 ENER LIGHT POWER SUPPLY M33409 BATTERY PACK CAPACITY LOW REF NR LP 9130234 DR R4 EMER LIGHT POWER SUPPLY M33409 CHARGER AND BATTERY PACK RE PLACED AND TESTED NORMAL AS PER AMM 33-51-06 ADD EMP:V898181 INSPECTED BY 161779, APPROVED