As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHT SWITCH IN ARM POSITION. ALL EMERGENCY LIGHTS WERE ON IN THE CABIN. TOWARDS THE END OF THE FLIGHT, THE EMERGENCY LIGHTS STARTED TO FLICKER. CORRECTIVE ACTION: REMOVED AND REPLACED FWD AND AFT EMERGENCY BATTERY PACKS IAW EMB300 MM 33-52-01. OPS CHECK GOOD.