As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT CREW AND PASSENGERS SMELLED SMOKE, LANDED AT FIRST AVAILABLE PLATFORM (WC 620) AND AFTER LANDING AIRCRAFT EXPERIENCED TOTAL ELECTRICAL FAILURE. REMOVED AND REPLACED AIRCRAFT BATTERY AND BATTERY RELAY, SET GENERATOR VOLTAGE AND INSPECTED WIRES IN AIRCRAFT NO DEFECTS NOTED. BATTERY RELAY GOT HOT. AIRCRAFT GROUND RAN NO DEFECTS NOTED ALL WORK DONE IAW MM.