As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW RECEIVED A BATTERY OVERHEAT INDICATION ON THE RED WARNING PANEL APPROXIMATELY TEN MINUTES OUT OF DAY. THE CREW CONTACTED MAINTENANCE CONTROL AND WAS ADVISED TO RETURN TO DAY. MAINTENANCE INSPECTED AND REPLACED THE NR 2 BATTERY IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 24-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RETURNED TO SERVICE.