As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2203, UPON LANDING THE CREW REPORTED A NUMBER TWO BATTERY OVER TEMP THERMAL RUNAWAY. MAINTENANCE REMOVED AND REPLACED THE NUMBER ONE AND NUMBER TWO MAIN BATTERIES, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.