XL6009 DC to DC Boost Converter 3.0-30V to 5-35V Step-up Transformer Power Module, Pack of 6

These DC-DC Step Up Converters do what they’re designed to do. I wanted to find out the lower limit of these converters, so I hooked up a power supply to the input side and a multimeter to the output side to test it out. I then applied an arbitrary voltage of 10 volts just to ensure the converter was turned on. Then, I adjusted the pot until the output showed 14 volts as an example for reference.(Adjust the pot CW to decrease the voltage output, and adjust the pot CCW to increase the output voltage.)Then, I adjusted the power supply down to 5.0 volts where the output of the converter remained at a solid 14 volts as shown. Finally, I adjusted the power supply down until there was instability in the output of the converter which happened at 3.3V. Beware though, as shown the output of the converter jumped up to 47 volts!Basically, keep the input to the converter above 4 volts and you will be good to go. After about an hour of on-time, I didn’t detect any heat dissipation at all. Great price on these little converters, too!

These work very well and don’t get too hot.

For small loads, don't give them more than 1.5 amps in or out.

Very easy to dial in quickly. Output seems very stable so far, but I'm not yet pulling my full current through it. I need a fixed 12v source from a 7.4v LiPo battery and don't want to risk the voltage changing from the robot's motion, so I dialed it in, desoldered the potentiometer, measured the middle leg to the leg furthest from the knob and found that the resistance was 2.84 kiloohms. I was able to get 12.1v (close enough) by dropping in two through-hole resistors in series (a 2.6 kOhm and 220 kOhm) where the potentiometer was.

This item was easy enough to include in a circuit -- I used a 5 volt USB-C connector as a power source and also had a LiPo battery and protection circuitry. I set the output voltage to 15v but after a short while the output voltage drifted upwards, eventually reaching 27 or 28 volts. I tried this with two different XL6009 DC to DC Boost Converter boards and saw the upward drift with both. I also tried removing the battery and battery protection circuitry but still saw the upward drift. I also tried 20+ rotations of the potentiometer (as noted in some other reviews), but this made no difference -- the upward drift continued to occur. I suspect a higher input voltage might correct the drift issue, but I need to use a 5v input source for my project, so this is not an option. Quite disappointed.

Used it with a $15 solar panel, when my car is arked it delivers 14v at 100ma to keep battery topped up, fights self-discharge especially when it's cold out.

These boost converters are great for my projects.I just used one to boost a 5v supply to 12v for some fans.I have tested all 10 and they all work as expected.

Simply tie a DC power source to the marked input locations following the instructions. Word of caution, the output is set for maximum output voltage so you might want to readjust the output adjustment pot prior to connecting it to a device.