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  • khal31
    FR
    2017-06-28 07:32:46

    I don't use these to build chargers but to transform old flashlights that use big expensive 4.5 batteries to LED flashlights that can work with one or 2 normal AA batteries. I thought that I have to use a resistor between the output of the DC-DC unit and the LED, but the LED works well without such resistor. I recover the LED ships from dead LED bulbs. I noticed that when a bulb dies, it is often because that one or few LEDs died. The other LEDs on the bulb still OK. Not easy to unsolder and re-solder

    Comments
  • 2016-02-16 08:43:28

    ottimo oggetto per poter elevare la tensione da 1 volt fino a 5 volt totali

    Comments
  • uzulmez
    TR
    2016-11-23 10:19:44

    Güzel parçalar. Sağlam teslim alınmıştır. Tavsiye edilir.

    Comments
  • 2020-07-13 18:09:14

    Good product.

    Comments
  • 2020-07-07 05:36:40

    Perfect woks well

    Comments
  • 2015-06-03 06:54:50

    Cheap as can be, works like a charm. I used it on a Li-Ion i ripped out of a GPS and rigged it to this and one of the Li-Ion charging boards. no issues ive seen yet.

    Comments
  • 2018-10-21 22:53:10

    The packaging was good, arrived in individual zip lock bags covered in sponge padding. All modules were looking nice but when I checked all of them, one module malfunctioned. It didn't work as expected while other modules were working fine.

    Comments (1)
  • Al.Iv.
    RU
    2018-06-26 12:59:29

    У одного модуля повреждён разъём USB. металлический корпус разъёма деформирован.Я заменил разъём.

    Comments
  • Stan57
    FR
    2017-10-07 15:43:30

    Bonne qualité, et petit prix. La pièce me donne entière satisfaction dans son utilisation, à savoir dans une alimentation que je me fais moi-même.

    Comments
  • kroki78
    HU
    2016-02-04 09:27:41

    These Step-Up regulators are really useful when someone wants to drive a USB or other device from i.e. a 3,7V Lithium Battery. They provide perfectly stabilised voltage at 5V. The 500-600mA is really almost the max. for these devices, above that it really starts to heat up!!!

    Comments
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