As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN EMERG LIGHT: IN THE ON POSITION EMER LIGHTS DO NOT COME ON WITH BATT OFF OR BATT ON. ALL LIGHTS COME ON IN THE ARM POSITION WITH BATT OFF. THIS WAS AFTER A FIVE HOUR FLIGHT (FIVE HOURS OF CHARGING). CORRECTIVE ACTION: REPLACED EMERGENCY LIGHTS BATTERY PACK #4 IAW CE680A AMM 33-50-06. ALL OPS TEST GOOD.