The Greenworks 2542602 is a 25" Self Propelled Mower with 8Ah Battery and Dual Port Charger 82V. The muscle of this mower flexes with its heavy-duty 25" heavy duty steel deck. Better, more intelligent power than any of its 160cc competition , the 25" cut delivers superior cut quality with premium blade speed and RPMs ranging between 4000- 4500. Runtime is a sure thing with battery ports holding up to 2 batteries to deliver the best runtime and endless cutting.