The DEWALT Powerstack DCBP518 5.0ah 18v Battery utilises pouch cells to give you greater productivity than before. Get 50% more power* enabling faster application speeds and increased productivity with more than 50% more work per charge** using this battery that works with all the 18V XR tools you already have. This DCBP518 battery provides twice the lifetime*** and features an impact-resistant, overmolded base with non-marring material.Powerstack battery technology - the most powerful, compact and lightest weight battery. The next dimension of power is now available in 5.0ah*vs. DEWALT DCB184 battery, not in application **Usable energy vs. DEWALT DCB184 battery, not in application ***Charge cycles vs. DEWALT DCB184 battery.The DeWalt DCBP034-XJ 18v XR Compact Powerstack Battery Pack is the next dimension in power to come from DeWalt Power Tools. The DeWalt Powerstack 18v battery system is capable of manoeuvring into those hard-to-reach areas and tight workspaces, with a battery engineered 25% smaller and 15% lighter in comparison to the DeWalt DCB183 18v XR 2.0Ah battery. DeWalt's Powerstack 18v XR technology works with the complete line of 18v XR tools and chargers - bringing a new lease of life and power to existing power tools.Dewalt DCBP518 Powerstack Features Higher max watts out, so there's a greater range of applicationsFaster speed of application, giving you increased output and more jobs doneImproved thermal performance. Pouch cells run cooler in application and dissipate heat better than cylindrical cellsCreate less heat resistance which means fewer hot pack shutdowns meaning less downtime and more productivityIncreased cycle life, which means better performance for longerFully backwards compatible with all Dewalt XR 18v ToolsDewalt DCBP034 Powerstack Features The stacked pouch cell battery technology provides a low impedance construction meaning that the rate of flow of electrons is much higher thanks t.