DC Power Supply Variable, 0-120V 0-3A Adjustable Switching DC Regulated Bench Power Supply with High Precision 4-Digit LED Display, 5V/2A USB Port, Coarse and Fine Adjustment SPS-12003

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.

Great power supply with voltage, wattage and current right in big red numbers on the front. Current control or voltage control.

I bought this supply to use a bench supply for my electronic projects. I was tired of buying batteries. I did some quick tests on it and it performed quite well. The calculated voltage, current and wattage readings (under a load) were very close to actual measurement. I scoped the outout and it was the corect voltage and no ripple.My test setup: A 44.2 OHM, 2 Watt Resistor, Power Supply, Oscilloscope & Fluke Multimenter.Calculated Results: 9.0 VDC 0.20 Amps 1.8 WattsMeasured Results: 9.0 VDC 0.198 Amps 1.782 Watts (Rounding it is exact the same as calculated)Scope: No rippleBeing able to be either a current supply or voltage supply (depending load) is a good feature for me.The only reason I gave the product 4 stars versus 5 stars are the controls.The course controls appear too course. The fine controls have too limited range.This make setting the voltage and / or current tedious.For my use, this is not a problem as my power supply voltage will be constant as it supplies power for my projects.I attached some test pictures.

Great little power supply. Bought this for a project that required me to equalize and charge some lithium batteries. Worked great and has come in handy for other electrical projects.

I burnt up my old variable power supply, looked on line and found this one. So far I am very happy with the purchase. The price was right and the adjustable current will come in handy.

Easy to use. Worked as expected with no issues.

I bought this to replace a PC power supply I was using for my rc car chargers. The PC supply could only output 12v but my chargers want 18v ideally.I was able to easily dial in the exact voltage needed. The chargers are working well and better than ever with the correct voltage.I like being able to see the amperage draw in real time. Before all I could do was guess. Now all the information is laid out at a glance. For higher drain uses I could see the leads being too thin. However, they work perfectly for my use without even warming up.This will be my new go to power supply for all bench testing in the future. I will update this review if I have any issues in the future. But so far so great. I'm enjoying the advanced features compared to a traditional PC power supply.