GreenWorks 29292 Gen1 40V Charger 29282 and 29302 Lihthium-Ion Batteries 40-volt, charges 2 amp hour or 4 amp hour lithium ion batteries Quick charge. 75 minutes for 2 amp hour battery Quick charge. 120 minutes for 4 amp hour battery GreenWorks Gen1 40V Lithium-Ion battery performs at maximum power for the best lawn care results with innovative fade free power Energy Star rated saves you money with each tool Compact design for easy storage or easy mounting Charge time of 90 minutes for 40V 2 AH Battery and 180 minutes for 40V 4 AH Battery Comatible only with GreenWorks Gen1 40V Tools and Battery Models 29282 and 29302