As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BATTERY CAPACITY TEST FOUND L1 DOOR BATTERY M33424 OPERATE LESS THAN 15 MINUTES REF TO HAECO NON-ROUTINE NO.9473719, SPEC NO. B777-33-3-7019. L1 DOOR BATTER Y M33424 REPLACED AND CARRIED OUT NEW BATTERY PACK TEST FOUND ''N ORMAL'' AS PER AMM 33-51-06-960-802 REV 99.