DC Power Supply Variable 30V 10A, eventek Adjustable Switching DC Regulated Bench Power Supply with 4-Digits LED Display, USB Interface, Alligator Cord/Test Lines (30V 10A, Black)

So far so good. Haven't load tested it yet, been only open curcit testing so far, according ti my Fluke combo-scope and my Fluke multimeter, it's within +/-0.05 volts. Which is good enough for what I do. Seen people mention noise, and I don't see anything out of the ordinary all the way down to 10 nano sec div. with my scope in analog mode pretty much flat-lined. Its been my experience, if you want to look for signal noise, analog is the best way to monitor. They catch anything and everything. In digital, nothing crazy. And seems to measure out really close to what the read out says on the powersupply. Maybe later this weekend I'll load test it some and see of any noise shows up. Not bad for less than $65 honestly.

Initial accuracy was meh. The voltage readings were always a little bit off compared to my Flukes, so I never would have trusted it for anything precise but it worked well enough for powering small lights and charging lithium ion battery packs. Usage is infrequent, just a few times a month. Today, after about a month idle, it did not work on powerup. Zeroing the knobs and adjusting voltage with open leads did not result in setting output voltage, the display stayed all zeroes. Shorting the leads and adjusting the current limit also did nothing, though the CV/CC indicator light would change. Attaching a load resistor and checking voltage/current did result in getting some voltage out, as confirmed by my Fluke, but it quickly fell to zero in about a second. I opened the case and did not find any loose connectors or obviously damaged components.Accuracy: 3/5. Output voltages only really good to about 0.1VValue: 2/5. Cheap, probably did get my $60 worth over a dozen small projects before it died.Overall: 1/5. As of this writing, this unit is listed as Unavailable on Amazon. If I could purchase another one, I would not.

Works great so far. Voltage accurate to my meter. My pool robot power supply failed and I couldn't bear paying the pool store over 6x what this cost. Tore apart the old one to get the wiring right and set it to 29v and off to the races. Not outdoor rated but I'll deal with that.

Good supply for the price I got it. Dialing in the right voltage a bit cumbersome but again, decent for the price. 1mV accuracy a little misleading as it has ~ 150mV noise and changes more than that under load (though the displayed voltage does not show that, so I suspect the current induced drop happens after the feedback signal). Attaching a couple of pictures comparing it against a bench supply which costs ~10x the price (very same test setup, just plugging into one power supply or the other). At power-on when set to 5V it overshoots to ~5.7V, drops to 5V quickly under load, ~300ms with no load - not horrible, but something to consider if using for very sensitive circuits (which I would not).

I have used this power supply to test a many DC projects that I've worked on. It is very flexible. I have also used this to charge batteries.

I watched a YouTube review of this product and decided to try it. Works perfectly. I used it to charge my Milwaukee batteries that were too drained to charge it n the Milwaukee charger. It brought the to a level that the Milwaukee charger then finished charging them. I really like it.

Just received this item and initially trying to set the voltage, the knobs did nothing. You can turn the two on the right side of unit left and right and no changes would reflect on the screen. You have to push in and up on the knob as you turn and the display begins to jump erratically...0.06V-21.2v-6.3v-5.0v in a very non linear fashion. Tapping on the front screen made the unit reflect a more linear change in voltage, but the knobs are so sensitive that you need to very gingerly turn them while not breathing. The fine adjust knob appears to have no effect.When you go to short the two leads to set the maximum current, you cannot get the display to go above 9.2A, even with the current adjust knobs maxed out.Finally got this to set to 3.65v after lots of very fine movements to get the number to stick. Item held voltage for about 30 minutes and next thing you know, the display is showing 21+ V very dangerous product that is being sent back.Do not recommend as this could destroy components or rupture cells.

Works as advertised, but I got it to use with a Flex Ham radio, like most "switching" type power supplies it creates "birdies" (high amplitude noise) in the output. Need better RF filtering.