DC Power Supply Variable, 0-30V 0-10A Adjustable Switching DC Regulated Bench Power Supply with High Precision 4-Digit LED Display, 5V/2A USB Port, Coarse and Fine Adjustment SPS-3010

Consistent, stable power with sufficient capability to support somewhat higher amperage needs were key criteria in my selection for my bench supply. I use a bench supply weekly, but for sporadic projects and testing rather than any heavy or production needs. So cost was also a big factor. This Jesverty SPS-3010 30v, 0-10A adjustable supply was on sale and I was honestly skeptical as to what I would find at such a great price. The included instructions are light, but I had absolutely no problem setting, using and adjusting right out of the box. It is surprisingly light in weight making me wonder about the circuitry. I deeper look showed good quality caps and solder and overall construction. The display is very bright, and adjustments permit relatively fine settings. For the average need of power supplies in this price range this is a winner with regard to output and settings. The voltage remained stable and load balance was likewise good on the various tests I performed. One caveat: The "Coarse" adjustment knob is quite sensitive and landing on the general output voltage requires some fiddling. The "Fine" adjustment range is limited and is not always sufficient to make all of the adjustment if you are heavy handed with the coarse knob. It comes with two basic leads terminating in alligator clips that are flexible and clamp reasonably well. Standard jack size permitting numerous other cabling/clip options as aftermarket purchases. My old leads fit snuggly and work just fine. The only other item included was a standard power cable that is just long enough to allow convenient positioning on my bench. Since the supply is so light it is easy to move around for different projects which I hadn't thought of but really enjoy. The power needs that I typically work with are well within the specs of this power supply making it quite versatile and handy. There is a USB output as well and I wasn't sure I'd really have much need yet after working with this for a while now I find I'm often using it as I work to complete a project that is USB powered. Nice for testing too! Honestly, if this were to last only a year I feel I'd have gotten ALL of my money's worth. My guess is that this will last long in my environment, and it does have internal fuse protection.

Summary: This is the 3rd power supply I have bought since 2020. The first two were the same 30V/6A (180W), one blew out, and the other is still working. Wanted a bit more power when charging 12V AGM batteries, so ordered this unit, which is a 30V/10A (300W). Overall, very satisfied with the performance. Use-Cases: In addition to charging 12V AGM batteries, I use this bench top power supply to charge lithium batteries. Have a couple of Milwaukee M18 battery packs that are older, and sometimes drop below the point where the standard charger will recognize it, so after opening the case, I can individually charge the cells. I typically start with this charger, and then finish off the cells with an XTAR lithium battery charger. Sometimes the XTAR stops at 4.0-4.1V, so I use the power supply to drive it to 4.20V when top balancing the pack. Observations: This unit has a robust cooling fan, and when running at high current (above 5A) the fan kicks on. While the added noise might bother some, this is the purpose of the cooling, to keep the power supply within the allowed temperature range, which can lead to long term reliability. This 300W power supply's cooling fan is definitely moving way more air volume than the 180W one. Selecting this one was easy because it was the #1 rated offering in "Lab Power Supplies", with over 1000 ratings/reviews. Recommendation: Last time I researched power supplies was 2021, so I spent an hour looking at a bunch of different options in the $50-200 range. I looked at a couple of dual units, essentially two of these in one, with the ability to parallel or series the output, but decided against those offerings which were in the $150 price range (3x the cost). The same can be done manually (with the requisite knowledge) with two individual units). In general, if you buy a higher rated supply, and run it at half power, it should last longer than a smaller unit running at full power (all the time). Pros: Jesverty is a specialty power supply manufacturer, many with great ratings/reviews; cost is comparable to similar offerings. Cons: None for now. Conclusion: At $50 for a 30/10A (300W) power supply, rating this 5-stars.

A little bit skeptical about the size this power supply, and I can’t attest to longevity as I just started using it, but I have it feeding a 20 gallon electrolysis tank and it works perfect! Much better than the 10 amp battery charger I was using, and being able to dial in the exact voltage and amperage is awesome. Nice steady stream of bubbles all the way around the iron skillet, completely cleaned one of the stubborn ones I had been working on in one afternoon.

Decent for a basic power supply, but I can't stand the voltage adjustment. The coarse knob gets you somewhere in the right neighborhood, and then the fine dials it in. Both are ridiculously sensitive. I would prefer a digital adjustment knob. As far as performance, it seems to work well. I haven't tested more than a couple of amps so far, but it worked well for my needs. The device looks great, and has a bright screen.

This power supply works perfectly—stable output, easy to adjust, and very reliable. The display is clear, and the safety features give me peace of mind. Excellent quality for the price!

Nice little trouble shoot tool. Electronic repair on small stuff requires watching how the current flows and limiting the current when a short is encountered. I like it. Wish I had one 30 years ago when I made a living repairing all sorts of devices. Price was excellent and easy to use.

Been runing for a few days and it works as expected. like most switch mode supplies ita RF noisy. But for testing stuff and charging batteries it works well.

Great product Easy set up Easy controls Doesn't take up too much real estate on workbench