As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 941 - SWF-IAD - MADE AN UNSCHEDULED LANDING DUE TO NR 1 BATTERY OVERTEMP. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE FERRIED AIRCRAFT TO IAD AND REMOVED AND REPLACED BATTERY, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (M)