This is the second - generation 9V to Barrel Jack Adapter. The 9V battery jack is made of hard plastic, which simplifies the connection and disconnection process. You can insert a 9V battery into one end and attach the other end to any device with a 5.5x2.1mm, center - positive barrel jack. Use this cable to power any 9V - required device with an on - board barrel jack, such as Arduinos, development boards, and evaluation boards. Shipping includes one 9V to Barrel Jack Adapter V2.


Using this adapter is easy. First, take your 9V battery and plug it into the end made of hard plastic on the adapter. Then, connect the other end of the adapter to the device that has a 5.5x2.1mm, center - positive barrel jack. This adapter works well for many devices like Arduinos, development boards, and evaluation boards. When using it, make sure the battery is properly inserted and the connection to the device is secure. For maintenance, keep it in a dry place. If the adapter gets dirty, you can gently wipe it with a dry cloth. Avoid using it in extremely hot or cold environments as it may affect its performance.