The CAT 60V 21 in. Self-Propelled Lawn Mower with 5.0Ah Battery and Charger offers ultimate performance without the drawbacks of using gas like excess maintenance and starting issues. This self-propelled lawn mower features a high-efficiency brushless 2.0 motor, which offers 40% more power than standard brushless motors plus extended run time, and longer life versus mowers with a brushed motor design. The 21 in. steel deck is wide enough so that you'll make fewer passes but is still easy to navigate between trees and bushes. It weighs 77.2 lb. with the battery installed. And the variable speed rear wheel drive system lets you adjust the rate based on the slope of your land and the density of your grass. This lawn mower utilizes smart technology called Torque-Logic, which automatically adjusts the rate of torque for you as it detects taller or thicker grass. Then it dials the power back down when things get easier to conserve battery. This push lawn mower also comes with a 5.0Ah battery and 5A charger that are compatible with every CAT 60V Outdoor Power Equipment tool.