Quickly mow up to 3.5 acres on a single charge . then fully recharge batteries in less than 3.5 hours with the Greenworks 60V 54?? 31 HP Electric Battery-Powered MaximusZ Zero-Turn Riding Lawn Mower . with (2) 20.0 Ah . (2) 8.0 Ah & (2) 4.0 Ah Batteries and 1.5 Kw Charger. Never bog down in tall . thick . or wet grass . thanks to triple-cutting blade motors. Feel the unmatched power with zero-turn lap bar steering and two high-torque brushless hub motors that mow at speeds up to 8 MPH. Greenworks unrivaled Intelligent Power combines brushless motor technology . cutting . drive . control . and battery systems to sense and auto-adapt power for the job at hand with a power output equivalent to a 31 HP gas-powered motor. Includes (2) 20.0 Ah . (2) 8.0 Ah & (2) 4.0 Ah Batteries and 1.5Kw Charger. Battery is compatible with 75+ Greenworks 60V products.