The Dewalt PowerStack 5.0 Ah 20V MAX battery is our most powerful battery in its class. The 20V MAX Dewalt PowerStack 5.0Ah Battery utilizes revolutionary pouch cell technology to deliver 50% more power, 50% more work per charge, and 2X the lifespan. Compatible with all DEWALT 20V MAX* tools and chargers, the DEWALT POWERSTACK 5.0 Ah Battery features an impact-resistant, rubber overmolded base and includes 3-LED Fuel Gauge state of charge indicator. This starter kit includes One (1) 20V MAX PowerStack Lithium-Ion Compact Battery 5.0 Ah (DCBP520) and One (1) 12V/20V Max Litium-Ion Battery Charger.