GreenWorks 29247 Charger for 20-Volt 2.6/6 Amp Hour Lithium Ion Batteries (Discontinued by Manufacturer) 20-volt, charges 2.6 amp hour, 5.5 amp hour or 6 amp hour lithium ion batteries Quick charge. 75 minutes for 2.6ah battery Quick charge. 120 minutes for 5.5 or 6 amp hour battery