Greenworks 40V Lithium Ion Battery Charger 29482 High Performance G-MAX 40V Lithium-Ion Battery Charger for low cost operation Energy Star Rated for eco-friendly households Quick battery charge time, 60 minutes for 2 AH Battery and 120 minutes for 4 AH Battery Compact design for easy storage and easy mounting Compatible Only with G-MAX 40V Battery Models 29462 and 29472