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DeWalt DCA1820 adapter expands battery compatibility
DeWalt

DeWalt 18V-20V Battery Adapter

$61.09 - $61.09
$61.09
$61.09 - $61.09
$61.09
Availability:
In Stock
SKU DCA1820

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We'll exchange or refund any product that doesn't meet your expectations.

Uncover the full potential of this product

The DeWalt 18V-20V Battery Adapter DCA1820 is designed to extend the life of your existing 18V DeWalt cordless tools by allowing them to operate with modern 20V MAX lithium-ion batteries. The DeWalt DCA1820 battery adapter provides a cost-effective solution for users transitioning from older stem-style 18V tools to the 20V MAX battery platform. Built with integrated battery protection circuitry, the adapter helps maintain safe operation while delivering enhanced runtime and performance. The DCA1820 18V to 20V adapter is compatible with most DeWalt 18V tools and supports select 20V MAX XR batteries, making it an essential upgrade for professional contractors and DIY users.


  • Upgrade Older Tools

    • Allows most 18V DeWalt tools to use newer 20V MAX batteries.


  • Extended Runtime

    • Enables longer operating time with modern lithium-ion battery technology.


  • Cost-Effective Solution

    • Helps avoid replacing an entire collection of 18V tools.


  • Integrated Protection

    • Includes circuitry designed to support battery protection in older tools.


  • Easy Installation

    • Quickly attaches between compatible batteries and tools.



  • Product Name:
    DeWalt 18V to 20V MAX Battery Adapter

  • SKU:
    DCA1820

  • Brand:
    DeWalt

  • Model Number:
    DCA1820

  • Product Type:
    Battery Adapter

  • Adapter Function:
    20V MAX Battery to 18V Tool Compatibility

  • Compatible Tools:
    Most DeWalt 18V Tools

  • Compatible Batteries:
    20V MAX 1.5Ah, 2.0Ah, 3.0Ah, 4.0Ah, 5.0Ah XR Batteries

  • FLEXVOLT Compatible:
    No

  • Voltage:
    18V / 20V MAX

  • Power Source:
    Battery Powered

  • Battery Included:
    No

  • Charger Included:
    No

  • Number of Pieces:
    1

  • Protection Circuitry:
    Yes

  • Warranty:
    3-Year Limited Warranty

  • Free Service:
    1 Year

  • Satisfaction Guarantee:
    90 Days

  • Package Includes:
    (1) DCA1820 Battery Adapter


Frequently Asked Questions

The DCA1820 allows compatible 20V MAX batteries to power most older 18V DeWalt cordless tools. This helps users continue using existing tools without purchasing new replacements.

The adapter is compatible with select 20V MAX batteries including 1.5Ah, 2.0Ah, 3.0Ah, 4.0Ah, and 5.0Ah XR battery packs. FLEXVOLT batteries are not supported with the DCA1820 adapter.

The DCA1820 works with most DeWalt 18V tools, although a few exceptions exist. Users should verify tool compatibility before purchase, especially with older specialty models.

No, the DCA1820 is not a charger and only functions as a battery compatibility adapter. Batteries must be removed and charged using a compatible DeWalt 20V MAX charger.

Many professionals use the adapter to keep older 18V tools in service while benefiting from modern lithium-ion battery technology. Community feedback frequently highlights the savings gained by upgrading batteries instead of replacing working tools.