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9v to Barrel Jack Adapter
This simple cable has so many uses! Plug the 9 volt battery clip onto a standard 9V battery and connect the other end to anything with a 5.5×2.1mm, center-positive barrel jack.
Use this cable to battery-power any device that needs 9V and has an on-board barrel jack – it works great for Arduino’s, development boards, evaluation boards, and more!