DC Power Supply, 30V 5A Bench Power Supply with Memory Storage & Recall，Variable Power Suppy with Encoder Adjustment Knob, 5V/3.6A USB Quick-Charge & OCP Short Circuit Alarm (0-30v 0-5a)

My first PSU arrived not working properly (JESVERTY branded). This NANKADF 5A PSU was it's replacement. I'm new to these bench PSUs, and already appreciate the awesomeness of this unit! The front facing power switch, as well as output button is a MUST. I avoided this push button style for the first PSU, and HATED the course and fine 2 knob system for voltage as well as current. This single button design for each is very simple, responsive, and the next higher value digit rolls over when rolling up past 9 or down past 0, making it VERY intuitive. The 3 memory settings are another MUST have if ever working with more than 1 standard voltage. Mine are set for 3.3, 4,2 and 5.1v. Awesome that the current limit gets stored with the voltage. No idea about fan noise because it hasn't come on yet after hours of use. The manual states it only comes on when needed, so I'm grateful I didn't choose a unit that the fan is on full time (from reviews of other units, it sounds annoying). The manual is worth reading, and describes the functions and use much better than the one I returned. The only tick against this unit is it came with the AC switch on the back set for 230V, rather than 115V for the country of purchase. Reading the manual first, it emphasized checking this before first use to prevent PSU damage. So another thumbs up for well written manual. I strongly recommend this PSU to others starting out as I am. But boost the bucks for the 10A version, because this is such a good (and pleasure to use) unit, it would be a shame to outgrow it's current limit without needing additional functions.

Great for testing radios and similar DC audio devices. Functionally perfect and well-designed and aesthetically pleasing. The green display is so much nicer than the standard red displays. My only change would be to be able to quiet the beeping when changing volt and amp settings, seems a little annoying. One thing to keep in mind before using the unit is to switch the input voltage in the back of the unit to 115V. For some reason it is set to the higher, foreign setting when you take it out of the box. This unit is far better than the inexpensive ones you can find out there. Spend a few bucks more and get a better unit like this one. I had a cheaper one that I returned that caused static on my radio testing and also emitted a high whine/pitch from within the unit. Overall, this is a great unit for most electronic DC requirements, 30V and 10A. For my purposes with old car radios I can set the volts at 13.75 and the amps at 5A, even though the radios only pull less than 2 amps. I set 5A as a ceiling to be on the safe side if there is an internal short inside the radio. Another good feature is being able to store multiple volt/amp settings for other types of requirements. I am extremely happy with my purchase, no regrets.

Very nice power supply. I bought 2 of them over 2 years ago for my home lab. Still working well. I don't use the USB charger or programmable features. I do use the 3 memory buttons on the front panel. Very convenient setting my frequently used voltages. The metal casing is like added bonus. The voltage reading seems accurate. The current is not accurate when at low values which is why I didn't give it 5 stars. I had an ammeter set-up and measuring 9.3mA but the power supply display shows 4mA. Would be nice if it was more accurate. Overall, happy with the product. Didn't see any electrical noise issues and very reliable. Using for over 2 years and still working well.

Nice, now I can power my amp without it shutting off👍

Am using this as a manual charger for maintaining automotive lead-acid batteries. Works great for constant current, constant voltage, and float charging…use of which mode depends on state of battery charge. As with any manual battery charging operation, one should monitor the charger and battery at all times.

very foolish flaw... I removed it most especially because there was a sticker telling you to do so, which is fairly uncommon but not unheard of,... And then it leaves all the adhesive behind, which is not only annoying and frosts the display, it's also disgustingly smelly and sticky. I'll return this one and get a new one and leave the applique on and then we'll see how it does.

I bought this specifically for my electronics repair bench, and love the presets, allowing for voltage as well as current presets. Also love the output enable switch. Super handy! A solid performer.

This could be a decent power supply, but the fan comes on even at low wattage,. I bought this to power a low voltage mattress heater, but the fan kept me awake. I expect to hear the fan when I'm running it at 200 Watts to warm up the bed, but not when I'm running it at 30 Watts during the night just to keep the mattress from getting cold.