This USB to DC booster cable has an integrated boost converter that steps up 5V USB power to 9V DC, output through a centre-positive 2.1 mm barrel jack. It's a convenient way to power 9V devices from any USB port — whether from a computer, USB wall charger, or battery pack.

Rated for 500 mA continuous output, the cable achieves up to 90% efficiency at low current draw. It's ideal for powering Arduino boards, effects pedals, routers, and other 9V devices without a dedicated power supply.

Key Features

• Integrated Boost Converter – Steps up 5V USB to 9V DC output
• 2.1 mm Centre-Positive Barrel Jack – Standard DC connector for 9V devices
• 500 mA Rated Output – Suitable for most 9V accessories
• Up to 90% Efficiency – Efficient power conversion at low to moderate loads
• 3 mA Quiescent Current – Low idle power consumption

Efficiency at Various Loads

• 50 mA – 9.0V output, ~90% efficiency
• 100 mA – 8.95V output, ~87% efficiency
• 200 mA – 8.9V output, ~86% efficiency
• 300 mA – 8.8V output, ~85% efficiency
• 500 mA – 8.8V output, ~83% efficiency

Ideal For

• Powering Arduino and other 9V dev boards from USB
• Guitar effects pedals and audio equipment
• Routers, modems, and small electronics
• Portable setups powered from USB battery packs

Package Contents

• 1× USB to 2.1 mm DC Booster Cable (9V)