9V Battery Snap Connector with DC Jack (Male Barrel Plug, 5.5mm × 2.1mm) – Battery Connector Cap for Arduino & DIY Projects
- Supply Voltage: 9V DC — designed for standard PP3 / 6F22 9V batteries.
- DC Jack Size: 5.5mm outer diameter × 2.1mm inner diameter — industry-standard barrel plug.
- Polarity: Centre Positive (+) — universally compatible with Arduino and most DC-input boards.
- Cable Length: Approx. 10–14 cm with Red (+) and Black (–) colour-coded leads.
- Connector Type: T-type snap-on cap — clips securely onto standard 9V battery terminals.
- Excellent electrical conductivity with durable plastic and metal construction.
- Ideal for powering Arduino UNO, MEGA, NodeMCU, breadboard circuits and DIY electronics projects.
- Pack Contents: 2 × 9V Battery Snap Connector with DC Jack.
Product Details
9V Battery Snap Connector with DC Jack (5.5mm × 2.1mm) – Battery Connector Cap
The 9V Battery Snap Connector with DC Jack is one of the most essential and commonly used accessories in electronics prototyping and DIY projects. It provides a simple, reliable, and tool-free way to connect a standard 9V PP3 / 6F22 battery to any circuit or development board that accepts a 5.5mm × 2.1mm barrel DC jack — including the popular Arduino UNO, Arduino MEGA, and a wide range of compatible microcontroller boards and modules.
The connector features a T-type snap-on plastic cap with two metal contacts that firmly clip onto the positive and negative terminals of a 9V battery, providing a secure and vibration-resistant connection. Two colour-coded wires extend from the cap — Red for positive (+) and Black for negative (–) — terminated in a standard male DC barrel plug (5.5mm OD × 2.1mm ID, centre positive). This is the same connector type used on most Arduino boards and DC-powered electronic modules.
Built with quality plastic and metal materials, this connector is environmentally friendly, offers good electrical conductivity, and is comfortable to handle. Its compact size and lightweight design make it ideal for use in battery-powered portable projects, test setups, and classroom electronics experiments.
🔧 Key Features
- Supply Voltage: 9V DC (Standard PP3 / 6F22 Battery).
- DC Jack OD: 5.5mm outer diameter.
- DC Jack ID: 2.1mm inner diameter (centre positive).
- Polarity: Centre Positive (+).
- Cable Length: Approx. 10–14 cm.
- Wire Colors: Red (Positive) + Black (Negative).
- Connector Type: T-type snap-on cap for 9V battery terminals.
- Material: Durable ABS plastic cap + metal contacts.
- Plug Type: Male DC barrel jack.
- Compatible Boards: Arduino UNO, MEGA, Nano (via adapter), NodeMCU, breadboard power modules, DIY circuits.
💡 Applications
- Powering Arduino UNO, MEGA, and compatible microcontroller boards from a 9V battery.
- Breadboard and prototyping circuit power supply connections.
- DIY electronics, robotics, and school/college project power cables.
- Battery-powered portable sensor nodes and IoT prototypes.
- Musical instruments, radios, and handheld devices using 9V PP3 batteries.
- Quick-connect power leads for test and measurement setups.
⚙️ Technical Specifications Summary
| Supply Voltage | 9V DC |
| Battery Type | Standard 9V PP3 / 6F22 |
| DC Jack Outer Diameter (OD) | 5.5mm |
| DC Jack Inner Diameter (ID) | 2.1mm |
| Polarity | Centre Positive (+) |
| Plug Type | Male DC Barrel Jack |
| Connector Style | T-Type Snap-On Battery Cap |
| Cable Length | Approx. 10–14 cm |
| Wire Colors | Red (+) / Black (–) |
| Material | ABS Plastic + Metal Contacts |
| Weight (per piece) | ~7g |
| Dimensions (with cable) | 160 × 26 × 9 mm |
| Pack Quantity | 2 Pieces |
| SKU (Robu.in) | 28684 |
📦 Package Includes
- 2 × 9V Battery Snap Connector with DC Jack (Male Barrel Plug 5.5mm × 2.1mm)
Note: 9V battery not included. Connector colour may vary (Black or Blue) depending on available stock.
