Review on Step Up Voltage Converter: Qutaway USB 5V to 9V or 12V Step Up π Cable - Adjustable DC to DC Transformer Converter with Switch - Effective Power Boost Solution (5V-9/12V) by Mike Hamelin
Need the power of a round fork!
I'm tired of buying batteries for all my electronics with round plugs so I settled on one of these. With my 5V/2.1 USB rechargeable battery And now I can charge my mini guitar amp, flashlight and more. This cable has a positive pole inside, but my mini guitar amp needs a positive pole on the outer shell, so I bought a reverse polarity cable and solved the problem very quickly. Read another review that says the same cable can work with guitar pedals too! No more searching for the right transformer!
- Easy to read control panel
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