The Greenworks 40V lithium-ion platform powers over 40 outdoor products, including lawn mowers, blowers, string trimmers, chainsaws, hedge trimmers, and much more! The 40V lithium-ion battery provides the power you need, and delivers fade-free power with no memory loss after charging. The outdoor power equipment allows you to tackle up to 1/2 acre with the available 2Ah, 2.5Ah, 3Ah, 4Ah, 5Ah, and 6Ah batteries. USB ports are integrated into the BAF701, BAF702, L-300, BAF704, BAF705, L-600 batteries, making it a portable charger for phones, tablets, and other compatible electronic accessories. The Greenworks 40V platform comes with a 3 year tool / battery warranty to protect your investment. New Greenworks 40V 21″ Brushless Walk Behind Push Lawn Mower: 21″ Deck Size – Durable steel that plows through the tallest grass Push Button Start – Press and mow, no more cord yanking Intelligent Brushless Motor Technology – 2x more torque, more power, longer runtimes, quiet operation, and extended motor life Highly efficient 40V brushless motor provides more torque, quiet operation, and longer life Single lever 7-position height adjustment EZ Fold handles are simple to use – Just pull, fold, and store in seconds – taking up to 70% less space Dual battery port design enables one battery to be stored while the other fuels the mower, saving you a trip to the garage The convenient 3-in-1 cutting deck lets you choose your finish from mulching, bagging or side discharge on the lawn Battery Powers 75+ 40V Products – One battery to mow, blow, cut, trim, cultivate, and more!