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. No memory effect and virtually no self-discharge for maximum productivity less downtime. They have protection against overheating, overloading and deep discharge conditions which increases the overall battery life. The Dewalt Tstak storage case comes complete with adaptable foam insert to keep powertools protected against shock. Fitted with padlock eyes to keep tools safe and secure.