Details: Offering the torque of gas without the noise, mess and fumes. The EGO POWER+ 21 Mower delivers long-lasting power, rapid charging and durability in all-weather conditions. With up to 45-minutes of cut time when used with the recommended EGO 56V 5. 0 Ah ARC Lithium battery, this mower tackles even the toughest of mowing applications for all grass types. The easily adjustable deck height enables you to cut at any length. Thanks to a sleek and lightweight construction, moving and storing the lawn mower is hassle-free. Compatible with all of EGO s ARC Lithium batteries; featuring industry-leading technology to deliver superior power.