Your cart is empty.
Your cart is empty.4.5 out of 5 stars
- #2,215 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
- #1 in Lab Power Supplies
- #2 in Life Science Supplies
Michael G. Connell
Reviewed in the United States on February 4, 2025
It does what it’s supposed to do and holds the voltage for me when needed. Adjust very easily between the two seperate pots, one being ruff and the other fine. I would buy again or recommend.
Graham
Reviewed in Australia on February 4, 2025
Works well, although might struggle to get the full 10Amps at 30V, but pretty good.
Mark Kadrich
Reviewed in the United States on February 3, 2025
It was on the bench and helping with testing within minutes of its arrival. The voltage adjustment is a bit of a pain because it is so variable and precise but once set, it works great. Once you get used to how it adjusts, it’s easy. The leads could be a foot longer though.
Kohn Issa
Reviewed in Canada on February 16, 2025
It works well but there's no way to know what current value you've set it to until you short it.
Andreas W.
Reviewed in Germany on January 28, 2025
Lieferung übertraf meine Erwartungen... wiegt fast garnichts, da das Gerät ohne Trafo auskommt. Ich nutze das Gerät regelmässig und es funktioniert perffekt. Die Spannung lässt sich gut einstellen und die Digitalanzeigen sind sehr genau.
thomas badgett
Reviewed in the United States on January 14, 2025
Extremely versatile power supply. It will do exactly as the specs say. I have used it for making nickel plating solution and also for charging lifepo4 batteries that I’ve gotten on Amazon. Voltage is very accurate. I have checked with my fluke meter and the voltage on the display is what my fluke meter says.
aTypicalEngineer808
Reviewed in the United States on August 4, 2024
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.
DeputyDawg
Reviewed in the United States on December 9, 2024
Initially, the unit did not operate as I had expected. But after reading the directions and testing it according to the manufacturer's instructions, I believe this power supply is a fantastic product and wonderful value if you have the need for it.Conducted my testing with constant/variable loads and constant current set at 1 amp. Voltage and current readings were exactly as expected and tolerances were within manufacturer specifications. Definitely recommend. Oh yeah, the built-in fan also worked flawlessly.
Joan David Encarnacion Diaz
Reviewed in the United States on December 10, 2024
This variable voltage power supply is excellent. It maintains a stable voltage and provides accurate current consumption readings. The precision is impressive, especially considering its price. It's incredibly useful and offers great value for money.
Jody A.
Reviewed in the United States on November 3, 2024
Too quick for the review request. Did not get a chance to try it. Setup per included leaflet works as advertised.
大山椒魚
Reviewed in Japan on November 21, 2024
電源として、調整性、操作性共によい。
Christian
Reviewed in the United States on October 25, 2023
This is an excellent bench power supply. With an accuracy of 0.5% I was extremely surprised! I decided to check the output voltage with my multimeter to verify that it was actually outputting the voltage it displayed. What I ended up finding is that my multimeter was not accurate enough to correctly display the voltage!The device is accurate, very accurate. It’s much smaller than I expected which is a huge bonus! It’s also very light weight and has a really good professional look to it. Overall, I’m extremely satisfied!The only issue I had was with one of the banana clips. Specifically, the positive lead. The wire was sort of split in half? Half of it was soldered to the alligator clip, the other half was just loosely sitting inside. This could have been a pretty big issue… if the voltage and amperage was high enough, since only half of the wire was making contact, this could have easily caused the wire to overheat and burn. Luckily I noticed it early on.Aside from that wire (which was a simple de-solder, re-solder repair) I’m very happy with the product! The knobs are a bit difficult to work out at first as other users have mentioned, but you quickly get used to them. Personally, I think a good improvement would be to swap the knobs from a smooth rotation to something that clicks. Everything else is absolutely perfect. The cooling fan remains off until it’s needed, then automatically switches on. The fan is also extremely quiet, which is great. The power chord is small and compact, the unit itself is small and compact, the display is easily visible even in the light, but it’s also not super bright to where it’s a bother to use in the dark.The built in USB port is also a wonderful touch. The fact that it’s automatically set to 5V, 2A is perfect since I can charge my phone while also running a higher voltage out of the unit. Overall very satisfied! Just remember to check your leads before running a lot of power through them.
Recommended Products