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DC-Ladespannungssteigerungsmodul UPS unterbrechungsfreie Stromversorgung DC 5V zu 5/9/12V für 18650 Lithiumbatterie US$10.38 US$8.99 View It

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QwertzZuiopü 09/10/2021

Ordered the 5Volt Version. As far as I can tell the board says 5Volt as well. But output is above 8 Volts. Fried one of my mp3 players because I trusted the product. So be very careful and check the voltages before use. Otherwise you'll be confronted with magic smoke coming out of your equipment. And to be perfectly clear I ORDERED 5 VOLTS. Not 9V but it does not deliver 9 volts anyway.

Kommentar (1)

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YO2LYP Samehere, I got the 9 Volt version, but thanks to your comment, I checked the output voltage before. On the other hand, if you have the tools and skills, you can setup the output voltage from 5V to 12V etc by simply removing a resistor (SMD) and replacing it by another resistor (can be SMD or through hole (THT), you have big enough pads to solder the leads). Required resistor value can be calculated from the datasheet of the integrated circuit used on that board for DC-DC step-up converter (XR2981 ) .
Antwort 10/11/2021

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