The contact owns a 2022 Ford F-350 SD. The contact stated that there was a sulfur odor coming from the front end of the vehicle. After inspecting the vehicle, the contact noticed white smoke coming from the batteries. There were no warning lights illuminated. The contact replaced both batteries. The dealer was informed of the failures and confirmed that the batteries were not covered under warranty. The vehicle had not been taken to the dealer. The manufacturer was made aware of the failure. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 60,000.