Adafruit
4 x AA Battery Holder with 2.1mm Plug
A 4×AA battery holder with a 20cm (8″) power cable terminating in a centre-positive 2.1mm DC barrel jack. Provides a portable power source for development bo...
A 4×AA battery holder with a 20cm (8″) power cable terminating in a centre-positive 2.1mm DC barrel jack. Provides a portable power source for development boards and projects that accept a standard DC barrel jack input.
Delivers approximately 4.8V with NiMH rechargeable batteries or up to 6V with fresh alkaline cells, making it well suited for boards with a 4.5–6.5V DC input range. The DC plug is 5.5mm outer diameter, 2.1mm inner diameter with centre-positive polarity.
Key Features
- DC2.1 Barrel Jack Output – Standard 5.5mm OD / 2.1mm ID, centre-positive
- 20cm Cable Length – Flexible lead for easy connection to your project
- 4×AA Capacity – Accepts alkaline or NiMH rechargeable batteries
Specifications
- Battery Type – 4× AA (LR6 / HR6)
- Output Voltage – ~4.8V (NiMH) to ~6V (alkaline)
- Output Connector – DC barrel jack (5.5mm OD, 2.1mm ID, centre-positive)
- Cable Length – ~20cm (8″)
Ideal For
- Arduino, Raspberry Pi, and other boards with DC barrel jack input
- Portable and battery-powered projects
- Prototyping without a mains adapter
Package Contents
- 1× 4×AA Battery Holder with 2.1mm DC plug
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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Brands
Power & Batteries
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