As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN EMERG LIGHT: DURING ENGINE START EMERG LIGHT NOT ARMED CAS MESSAGE APPEARED. THEN EXTINGUISHED AT COMPLETION OF START. DURING FLIGHT EMERG LIGHTS BEGAN TO FLASH. REMOVED AND REPLACED FWD EMER BATTERY AND AFT EMER BATTERY DUE TO LOW VOLTAGE. IAW AMM 33-52-01. OPS CHECK GOOD AT THIS TIME.