DX  » Community » Reviews » Dynamo Hand-Crank USB Cell Phone Emergency Charger
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  • 5 Star:3147 (31%)
  • 4 Star:5381 (53%)
  • 3 Star:1016 (10%)
  • 2 Star:58 (5%)
  • 1 Star:12 (1%)

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94% of customers would recommend this product to a friend.

    • Overall Rating: 4
    • Price: 5
    • Quality: 3
    • Ease Of Use: 5
    • Usefulness: 4
    2 DXPoints
    earned for this post
    portable charger helps out in the woods

    posted by adolf81 on 02/25/2014 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 month

    Pros:
    1. very very small 2. helps recharging portable devices away from civilization 3. universal port USB, which is easy to choose the right cable
    Cons:
    1. because of the small size, easy to lose 2. very shaky handle dynamo 3. Housing material plastic, I would like stainless stee...
    View Detail » 
    • Overall Rating: 4
    • Price: 5
    • Quality: 2
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Serves

    posted by NitNesiv on 10/11/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    It is very small and easy to carry in suitcases and handbags. The operation is also good. Easily charges batteries for small devices.
    Cons:
    Make much noise while charging the battery. The lever is a bit fágil. A gear shaft escaped, it was necessary to open to fi...
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 4
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    For this price it's a must!

    posted by Azoth87 on 10/09/2013 Certified Owner

    Involvement:General (knows how to use it) - Ownership:1 week to 1 month

    Pros:
    It's cheap and it works and it douples as low power (red) flaslight. It's also quite small, so it's easy to carry with you when you're hiking or something like that. The crank is foldable so it packs quite compactly.
    Cons:
    I havn't found many cons from it. The only one so far is the crank, I'm afraid it's going to cut loose if you use just little b...
    View Detail » 
    • Overall Rating: 4
    • Price: 5
    • Quality: 3
    • Ease Of Use: 4
    • Usefulness: 3
    2 DXPoints
    earned for this post
    Not ordinary product...

    posted by Leks56 on 09/04/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month

    Pros:
    Light, compact. Inner parts is well oiled with consistent grease.
    Cons:
    One of two dynamo has defects right out of the box. Middle wall inside of dynamo is broken, Superglue do the job. Plastic seems...
    View Detail » 
    • Overall Rating: 2
    • Price: 4
    • Quality: 2
    • Ease Of Use: 2
    • Usefulness: 2
    2 DXPoints
    earned for this post
    Completely doesnt work

    posted by Larske2000 on 09/01/2013 Certified Owner

    Involvement:General (knows how to use it) - Ownership:more than 1 month

    Pros:
    Cheap prise, dont need any high voltage anymore, easy to carry with you
    Cons:
    completely doenst work. I tried everything, all kind of different mobile phones, differtent electronic things, but on none of t...
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 3
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Small but very useful

    posted by migueloma on 08/17/2013 Certified Owner

    Involvement:General (knows how to use it) - Ownership:1 week to 1 month

    Pros:
    It is a small but very useful product if one runs low, do not come to expect that you can charge to your cell hundred percent maximum load you can serve to make an emergency call
    Cons:
    The trouble is that not very good product finish and to some puento looks half weak, but the price is right relationship
    View Detail » 
    • Overall Rating: 3
    • Price: 5
    • Quality: 2
    • Ease Of Use: 5
    • Usefulness: 1
    2 DXPoints
    earned for this post
    This product is not pleasant.

    posted by zmeygeruch on 08/08/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 month

    Pros:
    - Design. - Simplicity. - Indication. - USB. - Low weight. - No alternative. - Lace at hand. - Ease of use.
    Cons:
    - Small charging current, so that the phone does not even use in an emergency. - And needed two people to use the phone in an ...
    View Detail » 
    • Overall Rating: 4
    • Price: 5
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 1
    2 DXPoints
    earned for this post
    it genial, but not util

    posted by pilukom21 on 07/01/2013 Certified Owner

    Involvement:General (knows how to use it) - Ownership:1 week to 1 month

    Pros:
    is an interesting product to buy, and that one is fascinated by your system. The shocking truth, which connect the usb this will work as a porter, but beware, not as you expect, do not load the phone, then give the dynamo for 5 minutes or more, very tired t...
    Cons:
    take long to load anything, to the point that will not be soon. but not useful. does what it says. load. works. but not as one ...
    View Detail » 
    • Overall Rating: 4
    • Price: 4
    • Quality: 4
    • Ease Of Use: 5
    • Usefulness: 3
    2 DXPoints
    earned for this post
    Affordable cheap well builded

    posted by marianogimenez on 06/25/2013 Certified Owner

    Involvement:General (knows how to use it) - Ownership:1 day to 1 week

    Pros:
    Light, robust, include a red led to show it's generating electric current, portable, compatible (It has a usb standard connection)
    Cons:
    It worth only for features that needs low current. I was able to charge my old LG phone, but not my BlackBerry, not my tablet
    View Detail » 
    • Overall Rating: 4
    • Price: 4
    • Quality: 3
    • Ease Of Use: 5
    • Usefulness: 3
    2 DXPoints
    earned for this post
    Cool but not the best charger

    posted by chemun on 06/23/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 month

    Pros:
    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.
    Cons:
    The name says it all, is an emergency charges. It charges very slow, so you have to waste a lot of time to get a 20% of battery...
    View Detail » 
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