As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER START IT WAS NOTED THAT THE RT GENERATOR HAD A 80 PERCENT LOAD. THE CREW SHUTDOWN AND CONTACTED MAINTENANCE, IT WAS DISCOVERED THAT THE BATTERY HAD SHORTED OUT INTERNALLY. THE BATTERY WAS REPLACED AND THE ACFT WAS STARTED WITHOUT FURTHER INCIDENT.