CNC Buck Adjustable Power Supply Module, Adjustable Buck Converter 50V 20A 1000W Voltage and Ammeter DC Voltage Regulator, LCD Display/DC Converter/DC CNC Power Supply/DC Converter Gray

Works as advertised and more. The conversion efficiency is quite high and the mosfets stay quite cool under load. Absolutely worth the price. I am using mine in a homemade power station, with a peak battery voltage of 50.4 V and an output of 12.4 V. The amp-hour measurement function is especially helpful. Overall this is a great product and seems quite well designed.

This thing is great! I'm using it to convert a 36 volt e-bike battery down to 19.5 volts at 10 amps to directly charge my laptop via the DC port. So far it works absolutely wonders! It barely gets hot, the fan kicks on minimally - this may be because the voltage I'm converting is 36 only to 19.5 not a huge difference.Either way I'm blown away by the performance to cost ratio.For those of you also looking to make a high WHr DIY portable power banks to escape the remote life home office every now and then this buck converter is critical. Outlet anxiety is a thing of the past lol. Buy it you won't regret it, and if you do Amazon return policy is great 🤣

I use mine for controlled power supply into various dc things, works great. The UI is a little clunky but functional enough. I had a mishap and connected it backwards, fried the input diode and the input 20a smd fuse. Waiting on the new parts(ordered separately) to see if it's still alive. Will report backUpdate(5aug23)Parts finally arrived, ss10100 smd diode and the smd 20a fuses. Replaced both with little hassle and it revived! Intent now being ill be integrating this into a different build to provide local power that's usable at the voltages I need. Took a big hit and still runs

This is a superb piece of electronic equipment for a good price.!The primary display always shows output voltage, and the secondary can be switched from current to power, watts, A-h (for battery charging), and time. The display was accurate to ~2% V and A when it was first tested, but it was set within 0.2% following the manual.The regulator was built into a case with a large 36 VAC, 20 A transformer, full wave bridge, choke and large capacitors to make a 45 VDC, 20 A power supply. Due to transformer (not regulator) limitations, the full current is not available above 20 VDC out.One small quibble: the PDF manual for the WZ5005L MUST be downloaded to make full use of this device. For example the manual explains how to change voltage increments from 0.01 V to 0.1 V, 1 V or 10 V per click, and how to perform calibration. Read it carefully, and try to accommodate some minor gaffes in translation, to get the full utility of the excellent hardware.

Lacks instructions to help adjust output voltages. Lacks instructions to help adjsut amperage output. In my case it is simple. 14.2 volts and 12 amps input. Trying to get 13.2 amps output with 10 amps.So it stays in alarm for over amperage in my case and there is no way I have found yet to adjust things and keep if fron an over amperage shut down.Your left to guess what and how to adjust things. Nothing about teh stupid thing is work the cost. I found instructions on line but tey were not of much help. Again just junk you can use with out a whole lot of guessing and trail and error. I can say honestly DO NOT BUY.

Great for tinkering folks. High amperage. Connect to high voltage batteries and lower to what you need. 48v or 33.6v batteries down to 13.8 with plenty of amp for you amateur radio use. 3D print a case (search and you'll find a model for free).

Must get manual and read carefully, a bit non-intuitive

I don't normally give five stars but this time I did. I am using it for a 12 volt dc test bench unit. After getting the manual on line I found it very easy to setup and use. I will order one to finish my test bench project.