24V to 12V 10A DC Voltage Regulator Buck Converter Module 120W Waterproof Step-Down Power Supply for Cart Scooters,Golf cart

I bought this for my wagon that I use when I go fishing. With the lights I got it worked awesome! I was the talk of the fishing pier!

We have installed 4 of these. Every single one of them failed. The first one failed within a day. The second one lasted almost 5 months. The replacement that we had as a spare for the third one was DOA. Threw the 4th one in the garbage. I don't trust these. Replaced ours with Victron. Zero issues after that, and they get the rated power.

This worked well for the first couple of uses then one day it just stopped working entirely. It was only about 3 weeks into owning it and I'm very disappointed in the quality of it. When it worked, it worked fine, but then nothing ever again.

I've used a couple of modules like this now for voltage reduction. I find this form-factor with the finned aluminum case, potted electronics, and heavy gauge wires to be useful in cases where the alternative of using a simple PC-board regulator module would require coming up with a suitable enclosure. And most of the inexpensive alternative regulator modules do not have the high current capability of this product.The regulator tested here nominally reduces 24v to 12v. On the bench it produced a steady output of 12.25v as the input voltage was reduced all the way from 24v down to 13.8v. The quiescent current (with no load connected) was measured at about 4.3mA.All connections are clearly labeled on the bottom of the housing.If this is indeed a buck transformer as stated (there are also buck/boost devices that can reduce as well as raise voltage) it would be more efficient and run cooler than a linear regulator. Rather than having to dissipate the input/output voltage difference at the rated current as heat, buck transformers operate differently. In effect they generate a the necessary difference voltage (in this case 24v - 12v =12v difference) and subract that from the higher applied voltage (that is the "buck" part - you are bucking the input voltage).I can't confirm that this is truly a buck regulator without checking the thermal dissipation under load (or doing a destructive teardown), but I'm going to assume that regardless of how it operates it will be able to continuously source the rated current.I think these are very inexpensive considering the rugged enclosure, and I have found them to be a go-to solution where I need to generate a reduced voltage at relatively high current for use in exposed environments.Highly recommended.

I’m working on a CNC build and most of my power will be from 48V and 24V power supplies. However, I will have a few 12V low wattage items. Rather than having another power supply, I plan on using this converter to step down from a 24V supply.When I ordered this, I got the impression from the photos that this was small, and I can’t think quickly to convert metric to imperial measurements. It’s actually pretty good sized, about 3” square and 1-1/4” tall. The wires are heavy, probably at least 12 gauge.I tested this on a variable power supply. I got a steady 12.25V out from any voltage over that up to 24V in.This should work great for my needs.