Customer’s impression:
Very Good Quality BUONO solidly built Quality mediocre Clearly labeled
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  • Good value

    posted by bussemann on 12/31/2012

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


    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.


    None that I have found.


    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


    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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