I have bought a lot of these, and blown up 3 of them so I think I would know about all the strengths and shortfalls of this board. Let's start with the pros. This is a very accurate board and can output the set voltage under full load with an accuracy of about 50mv and little to no fluctuation. This can take up to about 35v as the input but it won't be happy and will heat up. It can withstand the inrush current from connecting it to a battery of about 38 amps. It cuts itself off within a few milliseconds of reaching the max output. It works well as a battery charger if you connect it properly). It can withstand a few seconds of being connected backward with no limit on the input current but it would be nice to see some other form of reverse protection than dead shorting the input terminals. For instance a small bridge rectifier so there is no reverse voltage and some warning to flip the leads instead of running the current through one small diode. Like described, this can take about 7-8 amps non-stop but it will be warm/hot and with more current you should put a better cooling device on it. I did a water system and just replaced the heatsink with a cold plate and it works amazingly. Now onto the cons. Like previously mentioned, the reverse protection but the other con is that the board cannot output 12 amps. It considers 12 its limit and shuts off with a warning instead of limiting itself to 12 amps. It would also be nice to see some kind of over-voltage protection as I accidentally connected it to 53v (entirely my fault not blaming the manufacturer) and the input capacitor blew up as well as the first regulator or MOSFET (I don't know what it is as there is a hole in it and there is a new one on the way). Also, I don't know if this can be helped or if it was just my fault but I attempted to charge a 12v battery and I forgot to change the output and it was set to 4.2v and it blew up the two regulators in the middle of the board. It would be nice if there was a way to preview the set voltage before outputting it. Overall this is an amazing board but it could be a little better with some testing. I'll keep buying these as I keep blowing them up and these are the best you can buy. Side note: I connected my oscilloscope to it and put it under load and as expected the output looks like a rectifier with a capacitor wave that's a bit jagged and maybe a slightly bigger capacitor would help smooth that out as well as another inductor or choke

Awesome little power supply. I use the constant current function to charge single cell lipos.

It's super easy to use. For those of you that say it came with non-clear plastic. You have to peel off the paper that's on it since it's use for protection. Scratches and what not. The instructions are pretty straight forward. You can figure it out by just messing with the unit in general. It does a great job of going all the way down to 6volts. To test old Car speedometers and what not. It's also super useful since it shows the Amperage output as well as the watts. Screen is a little hard to read if you're standing and it's a little lower in position as pictured. But overall it's everything I expected. Included a spare capacity in case of problems. Keep up the good work! Great Value for the money.

NA

Good looking unit. It comes with great instructions and specs. You must put a few pieces together. I haven't hooked it up yet to see how accurate it is but I'm sure it well be fine. Dealing with electricity you find out that it's hard to buy any meter that is dead accurate.