The Outdoor Rechargeable Battery Fan from Lasko is portable, so you can take it with you for tailgating, camping, fishing, and having fun in the back yard. Because it includes a rechargeable lithium ion battery and charging station, it will keep you feeling cooler for 4 hours on High and 15 hours on Low. Features easy push button controls and a pivoting fan head. The storage area on the bottom of the fan keeps the battery and AC adapter close by.