http://tinyurl.com/om6wyrxGreenWorks 25322 G-MAX 16-Inch Mower, G-MAX 40V 4 AH Li-Ion Battery and Charger Inc.Product Review Click on the link for more reviewsHigh Performance G-MAX 40V Lithium-Ion Battery delivers fade-free power with no memory loss after charging5-position cutting height ranging from 7/8-inch to 2 3/4-inch2-in-1 feature offers rear bagging and mulching capable6-inch front wheels/7-inch rear wheelsCompatible Only with G-MAX 40V Battery Models 29462 and 29472