As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND CABIN L1 DOOR AREA M33093 EMERGENCY POWER SUPPLY BATTERY LOW CAPACITY,ORIGINATED BY EMP V903172,REF TO HAECO NON ROUTINE N O.9469111 SPEC NO.B777-33-3-7019. PERFORMED BY EMP V903172,REPLACED THE CABIN L1 DOOR AREA M33093 EMERGENCY POWER SUPPLY BATTERY PACK AND OP TEST CARRIED OUT,FOUN D NORMAL AS PER AMM 33-51-06-960-802 REV 99,IDT BY TA705.