The Kobalt 40-Volt Max Brushless Motor Self Propelled Lawn Mower provides superior performance without the noise, mess, and fumes of gas. The 40V mower offers versatility with 3-1 cutting modes along convenient push button start and variable speed control. Offering up to 45-minutes of cut time, the 40V mower has you covered. The included 6.0Ah battery and charger are compatible with all Kobalt 40-volt max tools and are backed by a 5-year limited warranty on the tool and a 3-year limited warranty on the battery and charger. (Additional 6.0Ah battery - item #3809905)