DX » Community » Reviews » Dynamo Hand-Crank USB Cell Phone Emergency Charger
  • 5 star 58 ( 32% )
  • 4 star 92 ( 51% )
  • 3 star 19 ( 11% )
  • 2 star 8 ( 4% )
  • 1 star 2 ( 1% )
Customer’s impression:
There are no customer's impression yet.
Create Review

Share your thoughts and
Get DX Points!

Sort by
  • Latest Reviews
  • Most Helpful Reviews
  • Pro Reviews First
  • posted byClairtonAC on 07/09/2014

    The material is very sturdy, has an LED that indicates when something is being recharged, has a carrying handle, small and handy and can be brought anywhere. Might have in other colors, both the material and the color of the LED. For loads emergency works, but for long loads even better is the wall charger or car. If you've spent that pinch discharge ... Read more

    0 0
  • posted bymoonwalker88 on 06/11/2014

    easy to use, work everywhere, really small, no need to recharge it, use a standard usb port to maximium compatibility not so powerful, charge a phone can be a challenge if you get tired easily I have used many time when my smartphone left me without battery. I have it in my bag so if it happens any problem i am able to do a call emergency. If the battery ... Read more

    0 0
  • posted byskullzao on 06/06/2014

    It is a very nice gadget. this dynamo hand-crank usb charger works fine with my s3 mini and with an older cellphone. Perfect for emergency situations and for camping. I always bring this with me when I am camping. Price is cheap if we compare to benefits. Unfortunately doesn't geranates enough power to charger my s3 or ipad 3rd generation. Good gadget ... Read more

    Dynamo hand-crank
    1 0
  • posted byhudsonalves on 05/29/2014

    It is very small and easy to carry in suitcases and handbags. The operation is also good. Easily charges batteries for small devices. completely doenst work. I tried everything, all kind of different mobile phones, differtent electronic things, but on none of them this charger works. The red light starts to glow, but nothing else. Maybe im again the ... Read more

    0 0
  • posted bysams22 on 04/03/2014

    - Really recharges your phone; - Easy to use; - VERY important on an emergency; - Portable So far I haven't found no cons on the machinery, but you have to spend a bit energy to recharge your cellphone! The product arrived fast. I ordered without a tracking number and thought it would be a problem, but I was wrong: everything arrived fine! So...this ... Read more

    0 0
  • posted byeduardotv on 03/21/2014

    It works. good case quality. I tested on a smatphone. Most (90% ) of the phones i tested works. It does what it says . very satisfied Very slow charge. may be useful for only an emergency call. Very noisy . It been more hard do turn when charging a device. Too big for carrion on poket. May be in an ememercy it could be usefull. i spect it will be useful ... Read more

    0 0
  • posted byGuilhermetal on 03/09/2014

    It is good if you are in some place where you don't have access to electrical energy, i.e. in the woods or on travel (in a bus, car, train). It can charge a little you device, and allow you to use for a short period of time, good for emergencies. When you move the crank it makes SOOO MUCH noise!! It is very annoying. Also, you have to do it for a long ... Read more

    0 0
  • posted byadolf81 on 02/25/2014

    1. very very small 2. helps recharging portable devices away from civilization 3. universal port USB, which is easy to choose the right cable 1. because of the small size, easy to lose 2. very shaky handle dynamo 3. Housing material plastic, I would like stainless steel for more durability helps when you need to make an emergency call. has a small size ... Read more

    0 0
  • posted byRobertoRenno on 01/28/2014

    Good Material, Charges. If you ran out of battery and you need to use your phone it could save your day. Good travel gadget, don't need a socket to charge your phone. Take too long to charge anything, to the point that will be usefull. But its emergencial, it says its just for emergency load. Works Fine than. But not as one would expect. Could come ... Read more

    0 0
  • posted byhdevese on 01/20/2014

    This product is usefull when you need some emergency charger in the middle of nowhere. The first time I tried it, it really worked. But when you use a smartphone, I don't know if it's possible to charge it. But you'll have to buy some extra chagers because it's very fragile. So don't play with it! You only can use it a couple of times. You can't expect ... Read more

    0 0


Get great weekly deals and offers like: Collections