Duravolt is known for strong and reliable product. And a better Battery life. With the new model Duravolt fan Duravolt is known for strong and reliable product. And a better Battery life. With the new model Duravolt fan Duravolt is known for strong and reliable product. And a better Battery life. With the new model Duravolt fan Duravolt is known for strong and reliable product. And a better Battery life.