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Small black USB boost converter with LED display and 3.5x1.35mm output plug

Vszerda

Vszerda USB Boost Converter 5V to 9V 12V 3.5x1.35mm power adapter

SKU CH-E5G8-YJQJG

Boosts USB 5 V power to 9 V or 12 V with a 3.5×1.35 mm barrel output and LED voltage display

  • Converts 5 V USB power to 9 V or 12 V output
  • 5 mm x 1.35 mm barrel connector fits compatible devices
  • LED digital display shows real-time voltage status
  • Compact step-up converter powers equipment from standard USB ports

Portable USB boost converter for 9 V

This compact adapter steps a standard 5 V USB source up to 9 V or 12 V, delivering power through a 3.5 x 1.35 mm barrel connector. It suits makers, technicians and hobbyists who need to run 9 V or 12 V gear from a power bank or USB charger.

Efficient step-up with built-in voltage display

The integrated LED readout shows the output voltage in real time so you can confirm the selected rail before connecting sensitive hardware. The converter draws only the current required by the load, keeping heat and wasted power low during typical bench or field use.

How it compares

Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 58% of the 3,875 comparable items (median $23.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the 3.5x1.35mm plug and which step is often missed?

Insert the 3.5x1.35mm barrel into the device's DC jack, then plug the USB end into a 5V source; the step often missed is confirming the load needs 9V or 12V before powering on.

What maintenance or replacement will the boost converter need over time?

The converter has no user-serviceable parts; if the LED display dims or output becomes unstable, replace the entire unit rather than attempting internal repair.

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