---
product_id: 369648310
title: "DC power supply (0-30V,0-5A) adjustable, switching power supplies, mini high precision 4-digit display with USB fast charging interface, variable lab bench power supply, output on/off/encoder knob"
brand: "nankadf"
price: "$4435"
currency: MXN
in_stock: true
reviews_count: 8
category: "Nankadf"
url: https://www.desertcart.mx/products/369648310-dc-power-supply-0-30v-0-5a-adjustable-switching-power
store_origin: MX
region: Mexico
---

# 0-30V / 0-5A adjustable output 18W USB fast charging port 4-digit precision display DC power supply (0-30V,0-5A) adjustable, switching power supplies, mini high precision 4-digit display with USB fast charging interface, variable lab bench power supply, output on/off/encoder knob

**Brand:** nankadf
**Price:** $4435
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your projects with precision and style — never miss a beat!

## Quick Answers

- **What is this?** DC power supply (0-30V,0-5A) adjustable, switching power supplies, mini high precision 4-digit display with USB fast charging interface, variable lab bench power supply, output on/off/encoder knob by nankadf
- **How much does it cost?** $4435 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/369648310-dc-power-supply-0-30v-0-5a-adjustable-switching-power)

## Best For

- nankadf enthusiasts

## Why This Product

- Trusted nankadf brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Lightweight 2.47 lbs design fits seamlessly on any desk
- • **Smart USB Fast Charging:** Integrated 18W port auto-adapts to your device’s protocol
- • **Safety-First Engineering:** Built-in OVP, OCP, SCP & thermal protections for worry-free operation
- • **Pinpoint Precision Control:** Ultra-fine 0.01V & 0.001A resolution for flawless tuning
- • **Effortless Digital Adjustment:** Encoder knob lets you dial in exact settings with intuitive ease

## Overview

The NANKADF WPS305H is a compact, benchtop DC power supply delivering up to 30V and 5A with ultra-precise 4-digit LED readouts. Featuring an encoder knob for smooth digital adjustments, it includes advanced safety protections (OVP, OCP, SCP, thermal) and a dedicated 18W USB fast charging port that auto-detects device protocols. Lightweight and portable, it’s designed for professionals and enthusiasts seeking reliable, accurate power in a sleek, space-saving form factor.

## Description

Product Description NANKADF series laboratory switching power supply is a full-featured, simple and beautiful design of easy to operate power supply. The small body is made of high-quality components, the power supply itself has short-circuit protection, over-voltage protection, over-current protection, over-temperature protection and other perfect protection mechanisms, ideal for the majority of electronic enthusiasts and beginners to use. HD display Voltage, current, power three-line LED high-definition display The display has a protective film (you need to check it yourself because of the tight fit with the screen) USB fast charging This model supports an independent USB fast charging port with a built-in fast charging protocol chip and a maximum output power of up to 18W to provide fast charging for cell phones, PADs, charging pads and other devices with fast charging protocol. The output power is automatically adjusted according to the fast charging protocol supported by the device being charged, and will be output at standard 5V when used by devices that do not have fast charging capabilities. Regulated output This power supply can accurately set the voltage and current you need, and it can automatically calculate the output power based on the output voltage and current, while displaying the voltage, current, and calculated power on the screen. 110V/220V Automatic Matching Different from the power supply with ordinary single voltage input type. This power supply has 110V/220V dual voltage input, which allows you to use in different country locations. The bench power supply requires no manual configuration. It will automatically select the appropriate input voltage setting. Encoder adjustment knob Unlike the analog regulation of ordinary DC power supply, this power supply is regulated by encoder. It will make it easier and faster for you to set the power supply parameters.

Review: Brilliant bit of kit - So glad I finally bought a bench supply. And checked on videos online to see which one is best at this price range. It does so much more than the cheapest ones. If you set the current limit, and it is reached it tells you it is in current limit mode and then the voltage drains down. You can also set it to shut off with Over Current Protection, where an alarm will sound and it will cut power. I found the leads more than adequate with the alligator clips and spade terminals, which I prefer to the banana clips. Readout is nice and clear with a fairly good update rate so you can see changes happen quickly. You can even adjust the baud rate in the options to make it quicker and lower the screen brightness. USB port also came in handy, although you cannot read the current draw for this, and the manual doesn't mention what it's limit is. I powered an Arduino and charged a phone off it, so it was fit for purpose. Adjusting everything is easy with pushing the knobs to change which digit you want to adjust to do fine or rough adjustment from 1 / 0.1 / 0.01 etc. It would be nice if it remembered which digit you were last on though, as it keeps defaulting to fine adjustment and takes a bit of remembering to push it first before turning it. Only thing is the beeps are a bit annoying, which wasn't a problem at first, because the manual lets you turn it off by going into settings if you hold down the output button for 5 seconds. However, it doesn't remember what you set each time you turn it off so have to do it all again every time. This is silly because it remembers all your other settings, even when you unplug. I might just open it up and cover the buzzer with a piece of tape to make it less noisy.
Review: Fantastic DC Power Supply – Compact, Precise, and Feature-Packed! - Fantastic DC Power Supply – Compact, Precise, and Feature-Packed! I recently purchased this adjustable DC power supply, and it’s quickly become one of the most valuable tools on my workbench. Whether I’m working on electronics projects or need a reliable power source for testing, this little unit delivers on all fronts. Accuracy and Performance: The 4-digit display is one of the standout features of this power supply. It provides precise voltage and current readings, making it ideal for projects that require fine-tuned adjustments. I tested its accuracy with a multimeter, and the readings were spot-on, even at lower voltage and current levels. The 0-30V and 0-5A range is perfect for a variety of applications, from powering small components to more demanding devices. Build Quality: Despite its compact size, this power supply feels solid and well-constructed. The metal casing gives it a premium feel, and the design is sleek and modern. It’s lightweight yet sturdy, making it portable enough to move between workspaces without compromising durability. Ease of Use: The encoder knob is a game-changer. Adjusting voltage and current is smooth and precise, with no lag or jitter. The ability to toggle the output on and off is a great safety feature, especially when working on sensitive electronics. The intuitive layout of the controls and display makes it easy to use, even for beginners. USB Fast Charging: The inclusion of a USB fast-charging interface is a fantastic bonus. It’s a thoughtful addition that allows me to charge my phone or power USB devices without needing a separate charger. This feature alone makes it more versatile than other power supplies I’ve used in the past. Features I Appreciate: High Precision: The 4-digit display ensures you get detailed readings, which is essential for precision work. Output On/Off: Being able to control when the power is delivered adds an extra layer of safety. Compact Design: It doesn’t take up much space but still delivers the performance of larger units. Quiet Operation: It runs quietly, even under load, which is a big plus when working for extended periods. Pros: Highly accurate voltage and current adjustment Compact and lightweight design USB fast-charging port for added convenience Intuitive encoder knob for precise control Reliable and quiet operation Great value for the price Cons: The backlight on the display is quite bright, which might be a bit distracting in low-light environments (a dimming option would be a nice addition). The fan can kick in at higher loads, but it’s not overly noisy. Supplied Cables are not brilliant. I'll swap them out for multistrand, silicone wires. Conclusion: This DC power supply has been a fantastic purchase. It’s precise, versatile, and packed with features that make it ideal for hobbyists and professionals alike. The compact size and USB charging port are icing on the cake. If you’re looking for a reliable and accurate power supply for your lab bench or electronics projects, I can’t recommend this one highly enough!

## Features

- High Precision and Small Size: The power supply adopts 4-digit LED display, voltage display 0.01V, current display 0.001A. voltage, current, power three windows display (0-30V/0-5A adjustable). Weighing only 2.47 pounds, the size (7.48x3.54x5.9 inches) is easy to carry.
- Digital Adjustment: This power supply is encoder adjustment, it can be pre-set to the parameters you need and through the OUTPUT button to turn on or off the output of the power supply (when you trigger the OCP protection can press the OUTPUT button to lift the protection state)
- USB Fast Charging Interface: the power supply is configured with 18W fast charging interface, supporting a variety of fast charging protocols. Automatically adapted to the fast charging protocol of the device being charged. The USB can save your workbench space and power your electronics.
- CC/CV Automatic Switching: constant voltage and constant current values can be preset by coding knob, and automatically switch CC/CV state according to the load state. The product has OVP, OCP, SCP, temperature-controlled heat dissipation and other perfect protection mechanisms to effectively extend the service life of the product.
- OCP Short Circuit Protection Function: press the CURRENT code switch for 3 seconds (can turn on or off the short circuit protection alarm function). ocp enabled, when the external load short circuit or overcurrent power supply will stop output and sound an alarm (can effectively protect the tested products) you can get (power supply x 1, British standard AC power supply x 1, output crocodile clip load cable x 1, product User's Manual x 1)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09C8MT4KM |
| Amperage | 5 Amps |
| Best Sellers Rank | 1,005 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 3 in Industrial Power Supply |
| Brand | NANKADF |
| Brand Name | NANKADF |
| Colour | Black |
| Connector Types | usb |
| Connector type | usb |
| Country of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 2,102 Reviews |
| Enclosure Material | PE_(Polyethylene), PLA_(Polylactic_Acid), PS_(Polystyrene) |
| Form Factor | benchtop |
| Input Voltage | 230 Volts |
| Input voltage | 230 Volts |
| Item Dimensions | 19 x 9 x 15 centimetres |
| Item Weight | 1.46 Kilograms |
| Item height | 5.9 inches |
| Item weight | 1.46 Kilograms |
| Manufacturer | NANKADF |
| Material | PE_(Polyethylene), PLA_(Polylactic_Acid), PS_(Polystyrene) |
| Maximum Power | 150 Watts |
| Model Number | WPS305H |
| Output Current | 5 Amps |
| Output Voltage | 30 Volts |
| Output Wattage | 150 Watts |
| Product Warranty | 1 Year Warranty Against Manufacturer Defects |
| Specification Met | UL |
| UPC | 780279579727 |

## Product Details

- **Brand:** NANKADF
- **Colour:** Black
- **Material:** PE_(Polyethylene), PLA_(Polylactic_Acid), PS_(Polystyrene)
- **Item weight:** 1.46 Kilograms
- **Connector type:** usb

## Images

![DC power supply (0-30V,0-5A) adjustable, switching power supplies, mini high precision 4-digit display with USB fast charging interface, variable lab bench power supply, output on/off/encoder knob - Image 1](https://m.media-amazon.com/images/I/61zY-tikQPL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: How noisy is it?**
A: If you mean electrical noise, there's some fast switching noise on the output as you might expect from a switching power supply, the amplitude stays the same but the frequency goes up with output voltage. It'll show up on a 'scope if there's no load, probably as a sequence of quick impulses with a decaying "ring", it's nowhere near as bad as a typical cheap switched PSU and any kind of load capacitance should mop it up. If you mean audible noise, it has a fan but that only comes on when it's hot. Without the fan running it's effectively silent, though some switching PSUs can emit a whistle at the switching frequency, if you get one with something physically able to vibrate inside and your ears are up to hearing that. My ears aren't bad and I've heard nothing from my one.

**Q: With ‎wps1203h style	‎120v/3a(360w) what is maximum current at 12v / 24v?**
A: At both voltages, the max current is 10 amps.

**Q: How do I set constant current for it? It keeps reverting to 0 when i press output**
A: Replicated your problem on my unit - once you have set your required voltage output and the maximum current limit setting for the item under test or being run you then push 'Output' .... BUT,  if there is no active load attached to the power supply it will show the row of 'zero's'  on the current readout after a couple of seconds or so.

**Q: When using the usb output is  the current and voltage displayed so that you can use it as a usb power meter?**
A: NO THERE IS NO VISUAL INDICATION THAT THE USB CIRCUIT IS ON OTHER THAN THE APPLIANCE ON CHARGE
THE FRONT PANEL SHOWS ONLY POWER OUTPUT NOT USB.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Brilliant bit of kit
*by A***N on 2 August 2024*

So glad I finally bought a bench supply. And checked on videos online to see which one is best at this price range. It does so much more than the cheapest ones. If you set the current limit, and it is reached it tells you it is in current limit mode and then the voltage drains down. You can also set it to shut off with Over Current Protection, where an alarm will sound and it will cut power. I found the leads more than adequate with the alligator clips and spade terminals, which I prefer to the banana clips. Readout is nice and clear with a fairly good update rate so you can see changes happen quickly. You can even adjust the baud rate in the options to make it quicker and lower the screen brightness. USB port also came in handy, although you cannot read the current draw for this, and the manual doesn't mention what it's limit is. I powered an Arduino and charged a phone off it, so it was fit for purpose. Adjusting everything is easy with pushing the knobs to change which digit you want to adjust to do fine or rough adjustment from 1 / 0.1 / 0.01 etc. It would be nice if it remembered which digit you were last on though, as it keeps defaulting to fine adjustment and takes a bit of remembering to push it first before turning it. Only thing is the beeps are a bit annoying, which wasn't a problem at first, because the manual lets you turn it off by going into settings if you hold down the output button for 5 seconds. However, it doesn't remember what you set each time you turn it off so have to do it all again every time. This is silly because it remembers all your other settings, even when you unplug. I might just open it up and cover the buzzer with a piece of tape to make it less noisy.

### ⭐⭐⭐⭐⭐ Fantastic DC Power Supply – Compact, Precise, and Feature-Packed!
*by M***E on 21 December 2024*

Fantastic DC Power Supply – Compact, Precise, and Feature-Packed! I recently purchased this adjustable DC power supply, and it’s quickly become one of the most valuable tools on my workbench. Whether I’m working on electronics projects or need a reliable power source for testing, this little unit delivers on all fronts. Accuracy and Performance: The 4-digit display is one of the standout features of this power supply. It provides precise voltage and current readings, making it ideal for projects that require fine-tuned adjustments. I tested its accuracy with a multimeter, and the readings were spot-on, even at lower voltage and current levels. The 0-30V and 0-5A range is perfect for a variety of applications, from powering small components to more demanding devices. Build Quality: Despite its compact size, this power supply feels solid and well-constructed. The metal casing gives it a premium feel, and the design is sleek and modern. It’s lightweight yet sturdy, making it portable enough to move between workspaces without compromising durability. Ease of Use: The encoder knob is a game-changer. Adjusting voltage and current is smooth and precise, with no lag or jitter. The ability to toggle the output on and off is a great safety feature, especially when working on sensitive electronics. The intuitive layout of the controls and display makes it easy to use, even for beginners. USB Fast Charging: The inclusion of a USB fast-charging interface is a fantastic bonus. It’s a thoughtful addition that allows me to charge my phone or power USB devices without needing a separate charger. This feature alone makes it more versatile than other power supplies I’ve used in the past. Features I Appreciate: High Precision: The 4-digit display ensures you get detailed readings, which is essential for precision work. Output On/Off: Being able to control when the power is delivered adds an extra layer of safety. Compact Design: It doesn’t take up much space but still delivers the performance of larger units. Quiet Operation: It runs quietly, even under load, which is a big plus when working for extended periods. Pros: Highly accurate voltage and current adjustment Compact and lightweight design USB fast-charging port for added convenience Intuitive encoder knob for precise control Reliable and quiet operation Great value for the price Cons: The backlight on the display is quite bright, which might be a bit distracting in low-light environments (a dimming option would be a nice addition). The fan can kick in at higher loads, but it’s not overly noisy. Supplied Cables are not brilliant. I'll swap them out for multistrand, silicone wires. Conclusion: This DC power supply has been a fantastic purchase. It’s precise, versatile, and packed with features that make it ideal for hobbyists and professionals alike. The compact size and USB charging port are icing on the cake. If you’re looking for a reliable and accurate power supply for your lab bench or electronics projects, I can’t recommend this one highly enough!

### ⭐⭐⭐⭐ Nice Form and Function
*by M***M on 17 July 2022*

I have been meaning to get a PSU for ages and had this one in my wishlist for a while, picked up the 30V / 10A version for £60 on Prime Day excellent. I doubt that I will need 300W of power, but always nice to have under the hood for the same price as the 150W PSU. The unit is surprisingly small but well specified and not short on features. The buttons have a reassuring notched click to them when turned, and they also beep, however I quickly turned off the beeping using the system settings menu. The white LED on black display is large and clear and a definite upgrade to the retro red LED displays. As displayed in the photos the unit is very accurate and should be fine for most applications, bearing in mind that slight inaccuracy may be due to test leads having some resistance, and also test meters may also be slightly out of tolerance, unless you are a lab tech using properly calibrated equipment, this should be a welcome addition to your test bench. Inside the unit is neat and tidy, and uses suitable gauged cable and connectors to handle loads upto 10A, with quality components. The fan does not cut in often, but when it does it is reasonably quiet. The USB quick charge port, fast charges the latest Samsung Galaxy S22 phones with no problem, I do not have an iPhone but I guess it will work equally as well. This leads me to my minor grip with the unit, the binding posts are cheap as chips, they are okay I suppose, but not the type that I have been used to. There are no holes in the posts to thread cables through if you are out of banana plugs, or want to link the terminals together, and the black knobs can actually be unscrewed completely from the posts which could lead to them being lost? As someone also posted that one of their binding post snapped off, I decided to swap them out for some others that I found on Amazon 'CDL Micro Binding Terminal Posts', and they are much better quality. And yes I did intend to swap the position of the -ve and +ve posts, just didn't seem right. Also if you are after a pdf version of the manual head over to wanptek.com where you can download a copy. Overall very pleased with the product, it is solidly built, has great functionality, and I got it at a great price, just go easy on the binding posts.

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-01-25*