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  • 2017-01-18 12:37:38

    Nice, cheap and good DC-DC converter for Li battery. 5V output to USB-connector. With undervoltage protection when battery voltage drops below 2.5V and overcurrent protection.

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  • 2019-01-24 07:05:31

    funziona bene

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  • 2017-10-21 13:26:02

    Good quality pcb. Great for providing 5V to power USB devices from a 16850 li-ion battery.

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  • stunix
    GB
    2017-04-02 21:14:53

    these are very good. I solder a 12v dc barrel socket directly to the board end, and use them to power fones and pi from car battery and screen.

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  • Moshi
    FR
    2016-02-05 16:43:19

    Indidual anti-static packages, the modules arrived with no damage. The output from a 3.9V rises up to 5.1V...

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  • 2016-02-03 09:53:50

    Compré este nuevo equipo para alimentar mi Arduino, vender en mi país, y hacer mi cargador portátil.

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  • 2015-09-16 03:40:49

    Very fast delivery, works like a charm. already ordered them twice, and gonna order soon...

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  • ktlai
    HK
    2019-03-21 10:12:04

    Good product as described

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  • Bruno67
    FR
    2018-07-06 16:36:30

    Hi, I have received it today 07/06/2018 Have a nice day Sincerly yours Bruno MIEZE

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  • steva
    RO
    2018-07-05 04:15:58

    Great product!

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