18V Liion Replacement Battery Pack Compatible replacement for DCB204, DCB206, DCS380L1, DCS380M1, DCS381, DCS391, DCS391B, DCS391L1, DCS391M1, DCS393 and XR LiIon 18V tools Key benefits Restores cordless tool power: Provides a straightforward way to a depleted battery and get tools back to work without tool modification. Reliable 18V output: Designed to deliver the nominal 18 volt power needed by compatible tools for consistent operation across cutting, drilling, and fastening tasks. Dropin compatibility: Matches the connector and form factor of the listed models for simple installation and removal. Convenient spare or replacement: Keeps downtime low by offering a ready spare for extended jobs or replacing an aging pack. What this battery does Function: Serves as a direct replacement battery pack for compatible 18V cordless power tools. Chemistry: Lithium ion cells for standard cordless tool performance. Performance: Provides the required voltage and stable power delivery suitable for typical trades and home projects that use the listed models. Fit: Designed to connect and operate with the listed model numbers without modification. Practical use scenarios Onsite finish carpentry: Swap in this replacement battery to complete trim or deck cuts when an original battery is depleted during a job. Weekend renovation or DIY: Keep this battery as a spare to extend runtime for sanding, drilling, or cutting across multiple tool batteries. Remote or mobile work: Carry a charged spare battery when working at locations without easy access to mains charging to maintain continuous tool operation. Technical summary Voltage: 18V Chemistry: Liion Compatibility: Replacement for models DCB204, DCB206, DCS380L1, DCS380M1, DCS381, DCS391, DCS391B, DCS391L1, DCS391M1, DCS393 and XR LiIon 18V tools Function: Direct replacement battery pack for compatible cordless power tools Notes Use only with tools and chargers compatible with the listed 18V Liion models. Follow tool manufacturer guidance for safe battery handling, charging, and disposal.