Customer Reviews

4.96 out of 5
Write a Review
  • All Reviews (52)
  • Image (3)
  • Video (0)
  • All Star
    • All Star(52)
    • 5 Star(50)
    • 4 Star(2)
    • 3 Star(0)
    • 2 Star(0)
    • 1 Star(0)
Sort by:
Top Review
  • Top Review
  • Most Helpful
  • Most Recent
Reviews only from your country (United States)
|
Show Original

A part of the review has been auto-translated.

  • 28/06/2017

    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 such small smd LEDs but you can do it with time I haven't tested all 5 modules but the 2 I used worked well. Notice that when the module is alimented by only one AA battery at the input, the red LED does not work and still off

    Comments
    Show Original
  • 16/02/2016

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

    Comments
    Show Original
  • 23/11/2016

    Güzel parçalar. Sağlam teslim alınmıştır. Tavsiye edilir.

    Comments
    Show Original
  • 03/06/2015

    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
    Show Original
  • 21/10/2018

    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)
    Show Original
  • 26/06/2018

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

    Comments
    Show Original
  • 07/10/2017

    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
    Show Original
  • 04/02/2016

    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
    Show Original
  • 28/03/2018

    All five dc-dc work good! They give good 5v from voltage lower than 2v! And current it gives is enough for supply arduino and one sg90 servo.

    Comments
    Show Original
  • 06/04/2017

    Доставка очень быстрая, проверил - все работает. Продавцу большое спасибо.

    Comments
    Show Original
Show:

    Total 0 pages

    Go to page

    Go

    You might be interested in

    recommendation for you
    • US$15.99
    • US$10.99
    • US$21.92
    • US$5.99
    • US$5.48
    • US$7.99
    • US$0.99
    • US$3.49
    • US$7.99
    • US$8.99
    • US$4.99
    • US$11.99
    • US$13.99
    • US$79.99
    • US$3.59
    • US$27.99
    • US$4.99
    • US$11.99