Part of the Stihl® lightning battery systems™ AP Series, the ram 510 gives homeowners the performance of a gasoline powered mower without any of the hassles. Enjoy instant starting, less noise, zero gasoline costs and zero exhaust emissions. It features a 21 in deck, so you can cover more lawn faster than previous models, the ram 510. Also includes a holding slot for a second battery, so you can swap batteries and be ready-to cut again in seconds. It also features an adjustable handlebar, grass catcher and larger rear wheels for rough terrain. This battery-powered lawn mower is great for small-to-medium suburban yards.