As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE EMERGENCY LIGHT POWER SUPPLY BATTERY PACK(M33118) AT THE OFC R FOUND LOW CAPACITY. REPLACED THE EMERGENCY LIGHT POWER SUPPLY BATTERY PACK(M33118) IN THE OFCR AND CARRIED OUT TEST, THE RESULT WAS NORMAL REF AMM 33-29-10-960-810 REV 106.