GreenWorks 25312 G-MAX 40V Li-Ion 19-Inch Cordless Lawn Mower w/ (2) 4Ah Batteries & Charger High Performance G-MAX 40V Lithium-Ion Battery delivers fade-free power with no memory loss after charging 6-position cutting height ranging from 1 1/4-inch - 3 1/8-inch 3-in-1 feature offers side discharge, rear bagging and mulching capabilities 7-inch front wheels/6-inch rear wheels Compatible Only with G-MAX 40V Battery Models 29462 and 29472