The 5.5mm DC Jack to 9V Battery Holder is a compact and convenient power adapter designed to connect a 9V battery to devices requiring a 5.5mm x 2.1mm barrel DC input. This adapter allows for easy and portable power supply to small electronic devices such as development boards (e.g., Arduino, NodeMCU), sensors, or testing equipment without the need for a dedicated power adapter or power supply module.
Ideal for prototyping, portable projects, or emergency backup power, it provides a secure snap-on clip to standard 9V batteries and a barrel plug for plug-and-play functionality.
