As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A SERVICE CHECK, THE VENTRAL DOOR EMERGENCY EXIT SIGN AND OTHER CEILING EMERGENCY LIGHTS FAILED TO TEST. PERFORMED TROUBLESHOOTING IAW WDM 33-51-12, FOUND TWO BATTERY PACKS DAMAGED B5-239 AND B5-237, REMOVED AND REPLACED THE BATTERY PACKS. OPS CHECKED GOOD.