This 20V MAX starter kit includes an 8.0Ah battery, a 4.0 Ah battery and 8 Amp Fast Charger. Both batteries are compact in size and lightweight, providing ergonomic benefits for increased tool maneuverability and control for overhead applications. The charger is compatible with all DEWALT 12-Volt and 20-Volt MAX Lithium-Ion battery packs. Featuring an internal fan that helps prevent hot/cold pack delays, this charger keeps you working and productive on the jobsite.