Arctic Cove MBF0181 18-Volt Bucket Top Misting Fan with 2 Speeds and Quiet Performance Pump (Battery and Charger Included) Compatible with Ryobi 18 Volt One+ batteries. 5-gallon bucket sold separately. Dual Purpose Foot Design for Sitting on a bucket or to use on a flat surface with garden hose. Works with 18-volt lithium-ion battery for up 2.5 hours of run time and to 7 hours of - runtime with 4.0 battery and fan on low.