As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTING BATTERY PACK CAPACITY FUNCTIONAL CHECK FOUND DR 1L M33903 EMERGENCY LIGHT BATTERY PACK LOW CAPACITY - ORIGINA TED BY EMP V905400 ON HAECO NR 9475113, SPEC NO.B777-33-3-7030. PERFORMED BY EMP V924363, REPLACED DR 1L M33903 EMERGENCY LIGHT BATTERY PACK, AND PERFORMED THE LIGHT TEST, THE RESULT FOUND NOR MAL. REF AMM 33-51-06-960-802 REV 94.