As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER CABIN EMERGENCY LIGHT BATTERY PACK M1673 FAILS OPERATI ONAL TEST (REF AAR NR 1000032891). REMOVED AND REPLACED BATTERY PACK AT EMERGENCY POWER SUPPLY M167 3 IAW B737 AMM 33-51-06-960-805. TEST GOOD. FAILED FUNCTIONAL CHECK DURING RELIABILITY HOLD IN RFD REMOVED AND REPLACED BATTERY PACK AT EMERGENCY POWER SUPPLY M1673 IAW B737 AMM 33-51-06-960-805. TEST GOOD.