http://www.amazon.com/GreenWorks-25302-20-Inch-Cordless-Batteries/dp/B00GX9WNP2
Features:
G-MAX 40V Li-Ion Battery System powers multiple tools for complete yard work system--includes 2 Batteries and Charger
20-Inch cutting deck offers a great balance of maneuverability and cutting capacity making it ideal for mid-sized areas
Innovative Smart Cut technology adjusts for power or runtime based on the thickness of your grass
Features:
G-MAX 40V Li-Ion Battery System powers multiple tools for complete yard work system--includes 2 Batteries and Charger
20-Inch cutting deck offers a great balance of maneuverability and cutting capacity making it ideal for mid-sized areas
Innovative Smart Cut technology adjusts for power or runtime based on the thickness of your grass