As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE EN ROUTE AT APPROXIMATELY 1,906 HOURS, THE PILOT NOTICED A BATTERY TEMP WARNING LIGHT AND CONTACTED FARMINGDALE ATC AT 1,910 HOURS AND ASKED FOR A PRIORITY LANDING AND FIRE TRUCK ASSISTANCE. REMOVED AND REPLACED AIRCRAFT BATTERY. NEW SERVICEABLE BATTERY AND WARNING SYSTEM OPERATIONALLY CHECKED GOOD.