This 21-inch, 40V electric mower from Greenworks is great for small to medium-sized yards. The motor automatically adjusts speed to optimize battery usage and power between short and long cutting conditions. A second battery enables swapping on-the-go or provides some extra juice for one of the 25 other 40 V Greenworks tools that are compatible. Depending on your preference, included attachments let you mulch your clippings, bag 'em, or use the side discharge.
No gasoline or oil means less supplies to mess with and no need to fuss with an engine that won't start. It's also easy on the wallet. With a purchase price comparable to similar gas-powered models, the savings continue with each mow when you're only paying pennies for electricity.
note: We're very impressed with this machine. The power and convenience of this Greenworks mower made us change our recommendation from corded to cordless (if the incremental price is within your budget) and the rugged design looks great.