As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT HAND UPPER DECK BATTERY PACK INOP. REMOVED AND REPLACED LEFT HAND UPPER DECK BATTERY PACK AND OPERATIONS CHECK GOOD IN ACCORDANCE WITH B747-400 AMM 52-23-14. LEFT HAND UPPER DECK BATTERY POWER SUPPLY WON'T CHARGE. REMOVED AND REPLACED LEFT HAND UPPER DECK BATTERY POWER SUPPLY IN ACCORDANCE WITH B747-400SF SRM 51-40-02, OPERATIONS CHECK GOOD IN ACCORDANCE WITH B747-400 AMM 52-23-14.