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4.94 out of 5
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  • 16/03/2021

    very small

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  • 30/04/2019

    It's of good quality It has been successfully tested You can see the attached video for more details

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  • 22/08/2016

    Worked perfect with dual pack of CGR18650CG from my old battery laptop. I connected it to together and connect to old smartphone and after a while it start charging :)

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  • 21/02/2016

    Товар пришел, всё в порядке! Всё работает!) Теперь можно сделать поделки.)) The item came, all right! Everything works!) Now you can make crafts.))

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  • 17/02/2018

    Брал платку для маленькой солнечной панели. Со своей функцией справляется. Спасибо.

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  • 10/03/2017

    The circuit board is well processed, not all circuit boards from china are so well processed. (The fingerprints on the usb-port are my own fingerprints)

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  • 27/10/2016

    i ordered 2 boards and one had a cracked inductor. both tested with a 1.5v alkaline battery. 5.v on one board and 1.41v (same as input bat.) on board with cracked induct r. seems like a good product, just a shame one was broken

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  • 11/07/2016

    Fine for my needs. I got no more than 75-85% efficiency with a charged LiPo (4.18v) and various loads. Should get more efficiency with higher voltage but this is what I'm going to use it with. My photo shows it converting 3.65v from an old LiPo to 4.97v.

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  • 28/11/2016

    Very good module for DIY USB 5v Power Supply! An old plastic box, an old switch and a AA battery support. Is All!

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  • 27/04/2017

    Напряжение держит стабильно с током в 0,5 ампера справляется без перегрева

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