9V Battery Clip with DC Jack

Free your Arduino from the USB cable! This simple adapter allows you to take your project mobile. On one end, it features a sturdy “T-type” snap connector that clips securely onto any standard 9V battery. On the other end, it has a standard 5.5mm x 2.1mm center-positive DC plug—the exact size used by Arduino boards. It is the easiest, safest way to provide portable power to your microcontroller projects without soldering or stripping wires.