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Two yellow square ABS-and-steel battery adapters, each 3.7 by 3.7 by 3.3 inches

The Perfect Part

The Perfect Part DCA1820 18V-20V adapter 2-pack pneumatic accessory

SKU CH-PDZE-R9MDR MPN DCA1820

Two adapters convert 18 V or 20 V DeWalt lithium-ion batteries to a 5 V 2.1 A USB output, built from ABS and steel measuring 3.7 by 3.7 by 3.3 inches

  • Product typeAir-Powered & Pneumatic Tools
  • Size or dimensions3.7 in × 3.7 in × 3.3 in
  • Main materialABS + Steel
  • Color and finishYellow
  • Key featuresColor: Yellow; Material: ABS + Steel; Dimensions: 3.7 in x 3
  • Converts 18V tools to 20V MAX batteries
  • Two adapters included for multi-tool flexibility
  • USB port delivers 5V 2.1A for device charging
  • Compact 3.7 x 3.7 x 3.3 inch design fits tight spaces
  • Durable ABS and steel construction withstands job-site use

18V to 20V battery adapter pack

This two-pack adapter converts DeWalt 18V and 20V Max lithium-ion batteries for use with compatible power tools. The ABS and steel housing measures 3.7 by 3.7 by 3.3 inches and fits only batteries with the correct bottom cutouts. It is built for reliable everyday workshop use.

USB output and battery compatibility

Each adapter provides a USB interface output of 5V at 2.1A for charging phones or small devices. The converter works with DeWalt 18V and 20V Max Li-ion batteries, giving headroom for both voltage platforms. It does not support older nickel-cadmium packs or batteries lacking the required cutout profile.

Adapter interface limits

The USB port is limited to 5V 2.1A, so it cannot fast-charge tablets or laptops that demand higher current. The mechanical latch only accepts DeWalt 18V and 20V Max Li-ion form factors, excluding other brands and legacy chemistries. No data pass-through or voltage negotiation beyond the fixed output is provided.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 77% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameThe Perfect Part
Model nameDCA1820
Part numberDCA1820
Product typeAir-Powered & Pneumatic Tools
Color and finishYellow
Size & build
Size or dimensions3.7 in × 3.7 in × 3.3 in
Main materialABS + Steel

Questions about this item

Will the DCA1820 adapter let me keep using my DeWalt 18V lithium-ion batteries on 20V Max tools?

Yes, the converter is compatible with DeWalt 18V and 20V Max Li-ion batteries; the bottom cut-outs accept only Li-ion packs.

How do I confirm the USB port on the DCA1820 is delivering power after I plug it in?

Connect a device to the USB output rated at DV 5V / 2.1A; if the device charges, the adapter is working as intended.

What comes in the pack and do I need to buy batteries separately?

The pack includes two yellow ABS-and-steel adapters measuring 3.7" x 3.7" x 3.3"; batteries are not included.

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