The Greenworks 48V 21” Cordless Lawn Mower comes with (4) 24V Batteries and 2 Dual Port Rapid Chargers. Efficient brushless motor technology provides more power, quiet operation, and longer life. Self-propelled rear-wheel drive and variable speed control give maximum traction, maneuverability, and control. The 4-in-1 mowing versatility allows for various applications, including mulch, rear bag, side discharge, and even a Turbo button for times when you might need a little extra power. A 21” durable steel deck and 7 positions for flexible height adjustments ensure that you can get the job done just the way you like it. Two Greenworks 24V batteries combine for 48 volts of power without leaving the 24V battery platform, making it easy to swap batteries with other tools on the 24V platform. The Greenworks 24V lithium-ion platform powers over 75+ indoor and outdoor products, including lawn mowers, blowers, string trimmers, chainsaws, power tools, and more! The 24V lithium-ion battery provides 20% more power and 35% more run time while delivering fade-free power with no memory loss after charging. USB ports integrated into the batteries make it a portable charger for phones, tablets, and other compatible electronic accessories.