This Radley 17.5" 40V Max lawnmower is powered by (2) 20-Volt 5 Ah Lithium-Ion batteries so you can start mowing with the push of a button- instead of hassles with extension cords or spilling gas and oil. The brushless motor helps provide more efficiency and durability. Select your ideal grass height from 1" - 3" with the 6-position single point height adjusent. The 2-in-1 mulching and rear bag options let you choose which mowing function is best for your yard. The compact design features a sleek 17.5" deck and collapsible handles with quick release levers- ideal for storage in tight spaces. The 20V 5 Ah Lithium-Ion batteries (included) are adaptable to many other Radley cordless power tools and outdoor products (sold separately).