As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
B777-33-3-7019 - EMERGENCY LIGHTS BATTERY PACK AT LLAR FOUND CAPACITY CHECK FAIL.WORK TRANSFER NON ROUTINE WO.2612901 AND ORIGINATED BY EMP V920586. EMERGENCY LIGHTS BATTERY PACK M023 AT LLAR REPLACED AND INSTALLATION TEST CARRIED OUT WITH NORMAL RESULT AS PER AMM 33-51-06.