The DEWALT XR Slide Li-ion Battery Pack offers extended run time and optimised power to complete applications quickly. No memory effect and virtually no self-discharge for maximum productivity and less downtime. A LED state of charge indicator helps to manage charging/working time. Compatible with all 18V XR slide on tools and XR chargers.The DEWALT DCB183 XR Slide Battery Pack has the following specification: Battery Capacity: 2.0Ah.Battery Chemistry: Li-ion.Voltage: 18 Volt.