This is a pack of 5 x Dewalt DCB183 batteries. The DEWALT DCB183 XR 2.0Ah Battery Pack offers extended runtime and optimised power to complete applications quickly. The battery has a State of Charge Indicator that helps to manage pack charging. The battery pack has no memory effect and virtually no self-discharge to ensure maximum productivity and less down time. It has a lightweight design for comfortable tool operation, and is compatible with all DEWALT XR Li-Ion 18 Volt tools.