As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMER LT NOT ARM YELLOW CAS: ILLUMINATED. TRIED OFF THEN BACK TO ARM, CAS STILL ILLUMINATED. REMOVED FAULTY EMERGENCY BATTERY 1 AND INSTALLED NEW EMERGENCY BATTERY 1 . REMOVED FAULTY EMERGENCY BATTERY 2. PERFORMED OPS CHECK. OPS CHECK GOOD. NO DEFECTS NOTED.