As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS WILL NOT DISARM WITH SWITCH IN OFF POSITION. OVERWING EXIT LIGHTS WILL COME ON WITH ALL POWER OFF. DISCONNECTED EMERGENCY BATTERY PACK IN AFT CARGO CEILING PANEL, REMOVED AND REPLACED OVERWING EVACUATION EMERGENCY BATTERY POWER SUPPLY PER M/M B-717 M/M REF 33-51-06. OPS CHECKS GOOD.