Oregon Cordless BL300 Leaf Blower Kit with 4.0 Ah Battery Pack and Standard Charger 40V max lithium ion power for long run time Premium cell technology means constant no-fade power and holds a charge in storage for months Premium blower technology - high performance motor and fan maximizes blower output, Maximum air speed of 132 mph and maximum air volume of 507 cfm Comfort & control - gas power in a light-weight design; Large, variable speed trigger and turbo button reduce fatigue, managing control and run time Includes Standard Charger which can charge the 4.0 Ah battery in approximately 210 minutes