As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR 2L EMERGENCY LIGHTING POWER SUPPLY M33096 BATTERY LOW CAPACITY DURING CAPACITY CHECK REFER HAECO NON-ROUTINE NO.9450730 - ORIGINATED BY EMP V903172,SPEC NO.B777-33-3-7019 PERFORMED BY EMP V903172 ON HAECO NON-ROUTINE LP9450730,REPLACED THE DOOR 2L EMERGENCY LIGHT POWER SUPPLY M33096 BATTERY AND OP TEST CARRIED OUT,FOUND NORMAL AS PER AMM 33-51-06-960-802 REV 97 IDT BY TA409