As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND EMERGENCY LIGHT BATTERY PACK LOW CAPACITY AT R3 DOOR AREA FWD REFER HAECO NON-ROUTINE LOG PAGE:9494605,ORIGINATED BY EMP:V 905488,SPEC NO.B777-33-3-7015 PERFORMED BY EMP:V909210,WIRING CHECK FOUND M33404 BATTERY PACK LOW CAPACITY REPLACED M33404 BATTERY PACK AND NEW BATTERY PACK I NSTALLATION TEST FOUND NORMAL AS PER WDM 33-51-66 REV.90 AMM 33- 51-06-960-802 REV.101. IDT BY EMP:V905488