The latest Dewalt lithium battery - the 4.0ah DCB182 replaces the DCB180, offering 33% more runtime with a 0% weight increase. DEWALT XR Li-Ion Battery Technology offers extended runtime and optimised power to complete applications quickly. Lightweight design provides the user with 18V power for the equivalent of 12V NiCd/NiMH pack weight. No memory effect and virtually no self-discharge for maximum productivity and less downtime. Compatible with all DEWALT XR Li-Ion 18V Tools. Excellent electrical characteristics. Comes with the Dewalt DCB115 charger. The DCB115 XR charger replaces the DCB105 The DeWalt DCB115-GB XR Multi-Voltage Charger will not only charge all of the 1.5Ah and 3.0Ah 14.4V and 18V XR batteries but also DeWalt 10.8V battery packs. This system provides great flexibility and means that you are choosing a growing universal charging platform with more tools in the range already on the horizon.