As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTING: DURING COCKPIT PREP WHEN SELECTING EMER LIGHTS ON, THERE WAS NO EMER LIGHTS ON CAS MESSAGE. THE ENTIRE RIGHT SIDE OF THE EMERGENCY LIGHTING SYSTEM IS INOP. AFTER 30 MINUTES OF CHARGING THE SYSTEM WITH AIRCRAFT POWER THE FAILURE STILL PERSISTED. CORRECTIVE ACTION; REPLACED #2 BATTERY PER CUSTOMER REQUEST. OPS CHECK GOOD REF. GLOBAL 7500 AMP 33-53-00.