Cordless Electric Lawn Mower F4017 YellowSpecification Lithium Battery Contained: No OverSize: N Main Color: Yellow+Grey Main Material: Metal Details Perfect for yards up to 1 2 acre; this mower is lightweight; start instantly; and require virtually no maintenance (no oil changes; no air filters; no gas cans; etc.); but still deliver gas like power. Powered by a 40 volt brushless motor; the 17 in. 3 in 1 cordless Mower is a gas equivalent mower. With the 4. 0 Ah battery; it's powerful;