As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR 3L M33406 EMERGNECY POWER SUPPLY BATTERY PACK FOUND LOW CAP ACITY, REF HAECO NON-ROUTINE NO.9456220, ORIGINATED BY EMP V9054 95, SPEC NO.B777-33-3-7015 PERFORMED BY EMP V905495, IDT BY HAECO TA409 - REPLACED DOOR 3L M33406 EMERGENCY POWER SUPPLY BATTERY PACK AND PERFORMED TEST OF NEW BATTERY PACK AS PER AMM 33-51-06-960-802 REV.92A,TEST RESULT NORMAL