DEWALT® Dual Port Charger Kits come with 2 x 9.0Ah FLEXVOLTDEWALT batteries and are capable of charging 2 x DEWALT® 10.8 Volt to 18 Volt and DEWALT® FLEXVOLT® batteries at the same time. The charger can be wall mountable and will charge a 6.0Ah battery in 90 minutes plus it is an intelligent charger which varies output current according to the battery.