--- 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: "6625 kr" currency: ISK in_stock: false reviews_count: 13 category: "Nankadf" url: https://www.desertcart.is/products/369648310-dc-power-supply-0-30v-0-5a-adjustable-switching-power store_origin: IS region: Iceland --- # 30V/5A adjustable output 4-digit LED precision display 18W USB fast charging 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:** 6625 kr **Availability:** ❌ Out of Stock ## Summary > ⚡ Power Precision Meets Portability — Own the Bench, Own the Future! ## 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?** 6625 kr with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/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 - • **Smart Auto Mode Switching:** Seamless CC/CV auto-switching adapts instantly to your load for ultimate reliability. - • **Built-in Safety You Can Trust:** OCP, OVP, SCP, and temperature controls protect your gear and extend device life. - • **Workspace-Saving USB Fast Charge:** Integrated 18W USB port powers your devices while decluttering your bench. - • **Compact Powerhouse, Anywhere You Go:** Lightweight 2.47 lbs and sleek benchtop design fit perfectly in any workspace. - • **Pinpoint Accuracy at Your Fingertips:** Ultra-precise 0.01V & 0.001A digital readouts keep your projects flawless. ## Overview The NANKADF WPS305H is a high-precision, compact benchtop DC power supply delivering up to 30V and 5A with 4-digit LED displays for voltage, current, and power. Featuring encoder digital adjustment, automatic constant current/voltage switching, and comprehensive safety protections including OCP and OVP, it also integrates an 18W USB fast charging port. Weighing just 2.47 pounds, it’s designed for professionals and enthusiasts seeking reliable, portable, and smart power management. ## 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: Good supply, awful connection leads. - Nice power supply. Accuracy is pretty good too. USB is handy to keep my phone topped up (although seems a bit slow?) Absolutely ghastly crocodile clips on the leads, huge (how many amps do they think they are gonna deliver?), plus the jaws misalign on first use. I cut them off and put more sensible ones on at first use. Other than that it seems good. Good price, could have got it a bit cheaper direct from China, but no guarantee the local delivery company will actually deliver it. ## 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 | 724 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 2 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 841 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 weight | 1.46 Kilograms | | Manufacturer | NANKADF | | Manufacturer Part Number | WPS-10H | | 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 | | Unit Count | 1.0 count | ## Product Details - **Brand:** NANKADF - **Colour:** Black - **Connector type:** usb - **Item weight:** 1.46 Kilograms - **Material:** PE_(Polyethylene), PLA_(Polylactic_Acid), PS_(Polystyrene) ## 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) ![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 2](https://m.media-amazon.com/images/I/61ozvqmmA7L.jpg) ![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 3](https://m.media-amazon.com/images/I/71dWwtD2UQL.jpg) ![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 4](https://m.media-amazon.com/images/I/81WnLwFReuL.jpg) ![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 5](https://m.media-amazon.com/images/I/71LCucwtWxL.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. *by A***R on 20 February 2026* nicely built seems to work well.ease of use. ### ⭐⭐⭐⭐ Good supply, awful connection leads. *by M***E on 5 August 2025* Nice power supply. Accuracy is pretty good too. USB is handy to keep my phone topped up (although seems a bit slow?) Absolutely ghastly crocodile clips on the leads, huge (how many amps do they think they are gonna deliver?), plus the jaws misalign on first use. I cut them off and put more sensible ones on at first use. Other than that it seems good. Good price, could have got it a bit cheaper direct from China, but no guarantee the local delivery company will actually deliver it. ## Frequently Bought Together - 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 - Cleqee 3 Pairs Multimeter Test Leads Set 4mm Stackable Banana Plug to Alligator Clips Mini Test Hook Clips Stackable Banana Plug Cables Copper Electrical Wire - Cleqee Multimeter Test Leads Kit 21PCS Electrical Test Cables with Alligator Clips SMD IC Test Hook Clips Test Tweezer Spade Plug Banana Plug Replaceable Needles Pins --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.is/products/369648310-dc-power-supply-0-30v-0-5a-adjustable-switching-power](https://www.desertcart.is/products/369648310-dc-power-supply-0-30v-0-5a-adjustable-switching-power) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-06-05*