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4.89 out of 5
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  • 04/05/2021

    hello. i already have a rules card not all voltage. BAD 👎 👎 ....... 40v output = not all 20v input bad. 30v 5a output = not all 0.67v input . all not good

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  • 16/06/2021

    I build 12V charger for my e-scooter so i can charge from car or solar. 12V input and 42V output, max current is around 1.4A , i setup for 1A charge so current consumption is about 4A from input.

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  • 05/11/2021

    Pretty fast deliverey, first optical impression the module looks well build and has a thick windings coil mounted. The heatsinks needed some filing off the sharp edges. Board not tested for its operation capabilities yet. Thanks Banggood . Bye, Hans

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  • Arnoldo

    good DC to DC converter for my ibike battery. for solar panel voltage transformation

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  • 31/08/2021

    check Tobe done

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  • 23/08/2021

    item OK, function also ok

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  • 13/09/2021

    works well with my 12V Lipo and with 42V output

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  • 13/12/2018

    400W DC-DC High Power Constant Voltage Current Boost Power Supply Module its good and working well. good for COB chip LED. both current and voltage adjustable

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  • 23/12/2018

    no problem.

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  • 11/09/2018

    Damage Product not in Working condition. The potentiometer is not working the in put is 9V and out put is not going more than 2.5 V.The out put voltage is not stable every time fluctuating volt I hav update the picture of this item. packing is not good just wrapped up. please advise what to do with damage item. please help or advice me how to Repair or fix this damage item. where is the service center please provide Details. Tracking information is good and accurate Thankyou to Banggood Team.

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