Adafruit USB to 2.1mm DC Booster Cable - 9V

Explore a versatile cable featuring an integrated boost converter, empowering you to convert any USB port into a higher DC voltage source. Suitable for powering 9V devices with a center-positive 2.1mm DC barrel jack efficiently.Benefit from our version options, including a 12V output or a passthrough cable for 5VDC. This cable supports up to 500mA output, with performance optimized at low to moderate currents.Specifications:

* 50mA: 9.0V output, 90% efficiency * 100mA: 8.95V output, 87% efficiency * 200mA: 8.9V output, 86% efficiency * 300mA: 8.8V output, 85% efficiency * 500mA: 8.8V output, 83% efficiency The efficiency peaks at 90% for low current draws, reducing to 83% at full capacity. An additional quiescent current of 3mA is present.Ensure your setup includes quality cables to avoid power losses due to resistance, particularly if using a USB port with potential voltage drops.