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  • Overall Rating: 5
  • Price: 4
  • Quality: 5
  • Ease Of Use: 5
  • Usefulness: 5
Good value – DC-DC Converter Auto Step-Up Step-Down Solar Power Supply Module - Red Reviews

posted by bussemann on 12/31/2012 Certified Owner

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

Pros:
Step up AND step down. Efficient, no heat loss. Indicator light when working. Screw terminals in and out, good markings +/- Accompanying spacer nuts and bolts makes installing in metal encasement a breeze. Good build quality.
Cons:
None that I have found.
Other:
I have used this to make an emergency USB charger. With this I can connect ANY battery or combination of batteries and get a stable 5V output
Bottomline:
Great for variable input power sources, charge your phone from your bike dynamo, maybe? (rectify first) I have bought several, and they work as advertised

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