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This 4-pack USB step-down buck converter modules efficiently transform 7.5V-28V DC input into a stable 5V output at up to 3A, ideal for vehicle and portable device charging. Featuring a high-performance synchronous rectification IC, it achieves up to 96% efficiency, operates reliably across a wide temperature range (-40°C to 85°C), and includes LED indicators for easy status monitoring. Compact and versatile, these modules are essential for professionals seeking dependable power conversion on the move.
M**D
Good value. Works well.
These did the job. I used them for an art project with an Arduino. They were a good value and the voltage worked correctly.
E**A
Excelente producto.
Cumple con lo indicado. Llegó a tiempo el producto.
N**R
Great when used as designed
This is a wonderful little circuit, It’s only about .75”x.75” and if you connect it to DC power source of 7.5 volts or more you’ll have an instant USB charger. Using a couple surplus connectors, scrap wire and pieces of PVC pipe I made a dual outlet USB charger, powered by a Lithium battery from a cordless drill. It took about an hour, not counting waiting for the paint to dry.When used for their designed purpose these things are great. A previous reviewer tried using them “off label” and unfairly rated them poorly.
F**G
Easy, Easy, Easy
I needed to convert 9v to USB power, and voila, easy, easy easy. Cheap and small are big pluses in my case.
I**A
I bought to many because I didn't read... They are awesome.
Robust little board that steps down 12v to 5v so I can reuse some old alarm wiring in the walls to put cell chargers for repurposed tablets. I purchased to many because I didn't see that multiple came in an order... So now I am dreaming of more things to do with the extras.
A**M
Not the same product everytime
First time I got this product, I was able to remove the USB plug and use out+ and out-. Recent order, it has changed completely and now I can't remove the USB plug.
Trustpilot
1 week ago
2 weeks ago