25W DC-DC 12V 24V to 5V 5A Converter Buck Regulator 5 Volts Waterproof Vehicle Power Supply

works as it is supposed to

I’m powering some 5 volt DC devices from my solar generator which has 12 volt 30 amp DC output. This buck converter is working as expected with the desired 5 volt output. I have 100 watts of power draw going thru it with no issues. It’s not running hot, but I placed it on top off a small computer fan to keep airflow around it as a precaution. Great value and quality.

We used this on a FIRST Robotics Competition robot to power a string of LED lights for diagnostics and decoration. The existing power sources were limited to 2A at 5V so we used this to get up to 10A at 5V. It worked perfectly. I did not measure output volts so I can't comment on others observations about the 5V tolerance. Certainly in this case it was close enough and a great value for the money. I purchased a different brand and it failed very quickly. Highly recommend this one for durability.

I've received 2 of these items. Both showed the same defect, and I'm hoping the 3rd one you are sending me now is different When wired as shown on the device, with input to yellow & black, output to red & black, the output followed the input, with 12v in 12v out - no regulation. I noted that the wiring color code is the opposite of what I'm use to with dc converters, i.e. input R/B, output Y/B, which is also the color code shown and the Amazon page for your 25 w version. Very carefully I attached a variable voltage PS to the so-called output side of this device (R/B) and monitored the so-called input side as I raised the PS voltage. The voltage on the so-called input side of this device stabilized at 5.29v with no load as I approached 12v on the so-called output side. Is it possible that these devices are mislabeled? As it is, I'm afraid to use them and must send them back.

Product is great, I have it wired in my truck so that my dashcam, MagSafe phone charger, and other 5v devices have enough power from one converter. Makes the install a lot simpler. One cavity is that the diagram sticker was backwards. There’s the 4 wires, 2 black red and yellow. The red (and the black next to it) are the 12v input, while the yellow(and the other black next to the yellow) are your 5v output.I had it wired backwards but it didn’t seem to damage anything, it just supplied a slightly higher 12v output. I would be cautious though because there’s no guarantee that what you have connected knows not to accept 12v and could potentially fry the device. Use a multimeter to verify if you need to.

Works great. Idle current is very small.

This puts out 5.09 volts, so that's close enough. This was bought to drive a 5 volt led strip - and no matter the load I put on it (which was getting the wiring to the LED strip warm) it never seemed to warm.That's pretty good.Depending on your use, you may get it a lot warmer than I did. Considering the size of the heat sink - you'll get the full 10 amp draw and likely more.

NOTE: The component has a decal and clearly indicates the Source/Load connections, which is BACKWARDS compared to the diagram on the Amazon listing. Using the connections listed on the product will give you the WRONG output, 11+V and will damage your circuit if you are expecting 5V. However, the component works, when you follow the wiring shown in the Amazon Listing image. Output approximately 5.31VDC.