9V Battery to 2.1mm for Arduino Uno

🔌 9V Battery to 2.1mm DC Plug Adapter for Arduino Uno

🔹 Product Overview

The 9V Battery to 2.1mm DC Plug Adapter is a convenient power cable designed to connect a standard 9V battery to devices that use a 2.1mm DC barrel jack, such as the Arduino Uno and other compatible development boards.

It allows quick and portable power supply without soldering, making it ideal for DIY electronics, robotics, and student projects.

🔹 Key Features

• ✅ Compatible with 9V rectangular battery

• ✅ Standard 2.1mm DC male barrel plug

• ✅ Plug-and-play solution for Arduino Uno

• ✅ Pre-attached red (+) and black (–) wires

• ✅ Durable snap connector

• ✅ Lightweight and compact

• ✅ No soldering required

🔹 Technical Specifications

🔹 Compatibility

✔ Arduino Uno
✔ Arduino Mega
✔ Arduino Nano (with DC jack board)
✔ NodeMCU (via VIN with regulator)
✔ Other 2.1mm DC powered devices

⚠ Always confirm device voltage requirement before use.

🔹 How It Works

1. Attach the snap connector to a 9V battery.

2. Insert the 2.1mm DC plug into Arduino Uno power jack.

3. The Arduino receives regulated power through its onboard voltage regulator.

🔹 Applications

• 🔬 Electronics Projects

• 🤖 Robotics

• 📚 Student Learning Kits

• 🧪 Prototype Development

• 🔋 Portable Power Setup

🔹 Advantages

✔ Easy to use
✔ Portable power solution
✔ No soldering needed
✔ Ideal for beginners
✔ Budget-friendly

🔹 Important Notes ⚠

• 9V batteries drain quickly under heavy load

• Not suitable for high current devices

• Use quality alkaline or rechargeable 9V battery

• Remove battery when not in use