As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED MULTIPLE ELECTRICAL FAULTS AND MAIN BATTERY CHARGER MESSAGE. EMERGENCY DECLARED FLIGHT RETURNED LANDED WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. REPLACED MAIN BATTERY CHARGER AMD RELAY K102. SYS GROUND CHECK NORMAL OPERATION.