NICE-POWER DC Power Supply Adjustable Variable 3-Digital LED Display Adjustable Regulated Switching DC Lab Bench Power Supply Digital (30V 10A Black)

I really like the single voltage knob. It's a multiturn pot, so although you can't go from zero to full in one flick, it's much less fussy and touchy than working with coarse and fine knobs. I measured the noise output, and it's actually quite good, close to the rated spec. Also there is not really any overshoot at power-on. The problems that people have noted all relate to the fact that they are testing it with AC powered oscilloscopes, and introducing ground loops. In that case, yes, you will see noise and a turn-on spike. A common-mode inductor added to the DC output of the power supply can get rid of that issue. I just used the entire input filter board out of an old microwave oven. Didn't use the ground terminal of the filter, just the line and neutral. Note that this filter was filtering the AC input of the microwave, but I use it on the DC output of the power supply. I might even mount it inside the power supply. I know what I am doing, not recommending you try it, OK?

Using this to replace a Li-on battery charger. Set it to 28V and max 7 A which are the specs of the expired charger and seems to work good. Fan comes on every few minutes for a few seconds and is relatively loud. Fine for a garage or basement, too annoying for a living area. Was a lot cheaper than the OEM charger. I just cut the charge cable of the old charger and soldered small lugs on the ends to fit this power supply. Always be sure of polarity and wire sizing or you may set something on fire.

Works perfectly. Can’t adjust settings then turn on, but this is expected given the good price.

I recently installed some new LED landscape lighting that specifies a 12 volt power supply. But, when I applied a full 12 volts I found the lights to be way too bright. So I decided to try this variable power supply so I could dim down the lights a little by reducing the voltage. Problem solved! I reduced the voltage to about 9.5 volts and now the landscape lights look great. This variable power supply works perfectly, it holds very stable voltage wherever I set it and it has plenty of amp capacity for my purposes so that it doesn't have to work hard at all. It's compact, attractive, has a nice LED readout, simple controls and... it works! I have had it hooked up now for a few months with no problems at all. Good purchase!Update: This power supply has now been in service for over three years and is still working perfectly... So, I just purchased a second one to power another string of similar LED landscape lights. Very happy with this product!

Power supply works awesome and the adjustable amperage and voltage come in handy, have used it daily since purchase and would absolutely recommend it to any of my friends! Also has a handy USB charge port on the front that I use daily as well!

No Frills , no extras. Just stable voltage and current output. It does have a built in fan, that kicks on to keep it cool. I've used it to charge a 95AH bank of (c-max) lithium cells at 16.8v, and it handled it fine. I will upgrade my charge leads, but the supplied leads work as well.

The product was as described, good quality. Thank You great seller, I will be making purchases in the near future.

Bought this to charge 12v trail cam batteries. Failed 2 mos after warranty. Would not set a amp setting. Contacted seller about possible repair, but they talked like they would honor the warranty. In the end they didn't, which I expected but then they told me this unit was not made for what I was using it for..WHAT! I told them if that is the case their add should reflect that. This unit charged them fine for awhile but then puked it up. You can come to your own conclusion but I ain't buying another one from NICE.