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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
| Parameter | Value / Specification |
| Product Type | 9V Battery Snap Adapter Cable |
| Battery Connection | Standard 9V (6F22 / 6LR61) Snap Terminals |
| Output Connector | 2.1 mm x 5.5 mm DC Male Barrel Plug |
| Polarity | Center-Positive (Internal Pin: +, External Sleeve: -) |
| Cable Length | ~10 cm to 15 cm |
| Wire Gauge | 24 AWG or standard flexible copper stranded core |
| Insulation Material | Heavy-Duty PVC / Vinyl Cap |
