Fast, powerful and eco-friendly, the Worx Eco WG780 Mower ($400) makes yard work seem effortless. The zero-emission WG780 features a high-powered 24-volt battery eliminates the hassles and expense of fueling, and lets you mow up to 17,500 square feet on a single charge. Other features include a 19-inch cutting path deck, 3-function mowing, adjustable ergonomic handle and a six position height adjustment with one lever for all four wheels.