As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR R1 EMERGENCY LIGHT BATTERY PACK FOUND CAPACITY LOW DURING D EEP CYCLE,REFER HAECO NON-ROUTINE LP:9459702,ORIGINATED BY EMP V 905359,SPEC NO.B777-33-3-7019. PERFORMED BY EMP V903672,REPLACED DOOR R1 EMERGENCY LT BATTERY P ACK AND PERFORMED OPERATIONAL TEST OF THE NEW BATTERY PACK,THE R ESULT WAS NORMAL PER AMM 33-51-06-960-802 REV 92A.