As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERIOR/EXTERIOR EMERGENCY EXIT LIGHTS INOP<[01] PERFORMED TROUBLESHOOTING AS PER BOEING 737 WDM 33-51-13; FOUND M1670 EMERGENCY EXIT LIGHT BATTERY PACK DEFECTIVE. REMOVED AND REPLACED M1670 EMERGENCY EXIT LIGHT BATTERY PACK AS PER B737 AMM 33-51-06-960-805. INSTALLATION TEST PASSED.;[02] VERIFIED REPLACED