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The BLACK DECKER/DEWALT DCB2104-2 is a two-pack of 20V MAX XR 4 amp-hour lithium-ion batteries designed for use with 20V MAX compatible cordless power tools. Each battery is built with XR cell technology intended to extend runtime and cycle life compared to standard 20V MAX batteries. At a combined package weight of 11.53 pounds, this two-pack is suited for shops, job sites, and service vehicles where backup power is a routine requirement. Licensed electricians, HVAC technicians, and trade professionals who depend on cordless tools throughout the workday will find the dual-battery format practical for continuous use without interruption.
These batteries are designed for trade and professional use across residential and commercial job sites. The 20V MAX XR platform is widely deployed in cordless drilling, fastening, cutting, and diagnostic tool applications. The two-pack format supports a rotate-and-recharge workflow, keeping one battery in use while the other charges. This configuration is common among electrical and mechanical trades where tool downtime affects productivity.
Designed for use with tools in the 20V MAX cordless platform. No specific model numbers or system families beyond the 20V MAX designation were provided in the product data.
Battery installation and removal should follow the tool manufacturer guidelines for the specific cordless tool in use. Ensure the tool is powered off before inserting or removing the battery pack. Do not expose lithium-ion batteries to extreme heat, direct flame, or moisture. Store and charge batteries in accordance with the manufacturer recommendations and applicable workplace safety regulations.
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