As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEVERAL EMERGENCY EXIT LIGHTS FAILED OPERATIONAL TEST IN THE CABIN.<[01] REMOVED AND REPLACED EMERGENCY BATTERY PACK AT POSITIONS: (M1669; M1670 AND M1672) PER REF. B737 AMM 33-51-06-960-805.;[02] PERFORMED EMERGENCY LIGHTS OPERATIONAL TEST PER REF B737 AMM 33-51-06-960-805 AND TESTED NORMAL.;[03] VERIFIED STEP 1 AND 2