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Up to 50% more power for improved productivity (application speed vs. DCB183). Superior thermal performance versus cylindrical cells, thus increasing recharge cycles. Twice the lifetime of a cylindrical battery (charge cycles vs. DCB183).Compatible with all DeWalt 18v XR Power Tools. Smaller than cylindrical cell batteries Starter Kit Compatible with all 18v Tools Delivers more power (v DCB183) Low impedence construction increases power Pouch Cell Technology