Adafruit
2.1mm DC Barrel Plug to Alligator Clips
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$3.80
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Connect a battery pack or bare wires to any device with a 2.1 mm DC barrel jack input using this adapter cable. Colour-coded alligator clips (red for centre-...
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Connect a battery pack or bare wires to any device with a 2.1 mm DC barrel jack input using this adapter cable. Colour-coded alligator clips (red for centre-positive, black for ring-negative) clip onto battery terminals or exposed wires, while the moulded 2.1 mm barrel plug feeds power straight into your project.
Key Features
- 2.1 mm DC Barrel Plug – Standard centre-positive male connector fits most electronics power inputs
- Colour-Coded Alligator Clips – Red (positive) and black (negative) for easy identification
- Rated for 2–3 A – Handles up to 24 VDC
- Moulded Connector – Durable, high-quality barrel plug construction
Tip: Need the opposite direction? The Barrel Jack to Alligator Clips adapter connects a wall adapter's output to alligator clips instead.
Ideal For
- Powering barrel-jack devices from battery packs
- Quick bench connections from loose wires to a DC jack input
- Prototyping and testing power circuits
Package Contents
- 1× 2.1 mm DC Barrel Plug to Alligator Clips Cable
Jargon buster
Plain-language definitions for the technical terms used above.
- DC barrel jack
- A round power connector commonly used for low-voltage DC power supplies, often described by its outer and inner diameters such as 5.5 x 2.1 mm. Matching the barrel size and polarity is important so the plug physically fits and powers the device correctly.
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