As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NCI - FLIGHT 2643, DURING PREFLIGHT THE CREW REPORTED A BATTERY 2 OVERTEMP TO 92 DEGREES. MAINTENANCE REMOVED AND REPLACED THE NUMBER TWO MAIN BATTERY, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.