9V Battery Snap to DC Barrel Jack Power Cable Adapter | Pro Tronix

Product Description

This heavy-duty 9V Battery Snap to DC Barrel Jack Adapter is an essential power accessory engineered to connect a standard 9V primary battery directly to electronic development boards and testing gear. Molded with a rugged, flexible T-type or I-type vinyl cap, this snap lead provides a secure, vibration-proof connection to the battery terminals, mitigating the risk of intermittent power loss. The opposite end is terminated with a standard, high-conductivity 2.1mm x 5.5mm DC male barrel plug configured with a center-positive polarity orientation. For hardware developers, electronics hobbyists, and field technicians, this adapter is a fundamental bench tool that enables instant, cord-free mobile prototyping for microcontrollers without requiring a tethered wall adapter or custom power distribution rails.

Pinout / Layout Connections

The adapter consists of standard two-wire internal conductor wiring terminated at distinct interfaces:

• 9V Snap Side (Battery Input):

  • Circular Female Terminal: Connects directly to the male positive (+) terminal of the 9V battery.

  • Hexagonal Male Terminal: Connects directly to the female negative (-) terminal of the 9V battery.

• DC Barrel Jack Side (Power Output):

  • Inner Center Pin (+): Red wire paths voltage directly to the center pin, establishing the standard Center-Positive polarity.

  • Outer Circular Sleeve (-): Black wire paths the ground connection directly to the external sleeve jacket.

Applications

• Microcontroller Prototyping: Providing immediate mobile battery power to Arduino UNO, Mega, or compatible development boards via their onboard DC barrels.

• Field Diagnostic Power: Powering standalone electronics test rigs, sensor modules, and portable wireless transmitters away from grid power.

• Audio Gear Maintenance: Serving as a reliable power patch for musical effects pedals, portable pre-amps, and custom audio circuits.

• DIY Projects & Education: Utilizing 9V batteries safely in introductory electronics experiments, school robotics builds, and temporary hobby demonstrations.

Technical Specifications