Alternator/generator/regulator problems of the 2008 Ford F-350

Tl-the contact owns a 2008 Ford f350 sd. The contact stated that the battery warning light illuminated and discovered smoke coming from under the hood. The contact also mentioned that once the hood was opened, the alternator was on fire. The contact extinguished the fire. The police report was not filed. The vehicle was taken to the dealer who diagnosed that the alternator was cycling more than it should because the battery was not functioning properly which caused the fire. The vehicle was repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 81,000. Ne.