---
product_id: 77434272
title: "DC Power Supply Variable,Lab Bench Power Supply Adjustable 30V 5A 3 Digital Display,for Circuit Test,Electrolysis,DIY Electronics Testing, Battery Charging,Repairing,Researching,SKY TOPPOWER STP3005"
brand: "sky toppower"
price: "¥18161"
currency: JPY
in_stock: true
reviews_count: 8
category: "Sky Toppower"
url: https://www.desertcart.jp/products/77434272-dc-power-supply-variable-lab-bench-power-supply-adjustable-30v
store_origin: JP
region: Japan
---

# 30V adjustable voltage 3-digit LED display 5A max current output DC Power Supply Variable,Lab Bench Power Supply Adjustable 30V 5A 3 Digital Display,for Circuit Test,Electrolysis,DIY Electronics Testing, Battery Charging,Repairing,Researching,SKY TOPPOWER STP3005

**Brand:** sky toppower
**Price:** ¥18161
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your projects with precision and safety — don’t get left in the dark!

## Quick Answers

- **What is this?** DC Power Supply Variable,Lab Bench Power Supply Adjustable 30V 5A 3 Digital Display,for Circuit Test,Electrolysis,DIY Electronics Testing, Battery Charging,Repairing,Researching,SKY TOPPOWER STP3005 by sky toppower
- **How much does it cost?** ¥18161 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/77434272-dc-power-supply-variable-lab-bench-power-supply-adjustable-30v)

## Best For

- sky toppower enthusiasts

## Why This Product

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

## Key Features

- • **Smart Auto Mode:** Seamlessly switches between constant voltage and current modes to adapt to your load without interruption.
- • **Compact Powerhouse:** Lightweight (2.75 lbs) and space-saving design fits perfectly on any workbench or lab setup.
- • **Triple Safety Shield:** Grounding wire, anti-reverse connection, and multiple protections (thermal, short-circuit, overload) keep you and your gear safe.
- • **Precision Power Control:** Dial in voltage from 0 to 30V and current up to 5A with 0.1V/0.01A accuracy for flawless circuit testing.
- • **Trusted Support & Reliability:** Backed by 24/7 professional customer service and a 4.4-star rating from over 500 users—join the savvy pros who rely on SKY TOPPOWER.

## Overview

The SKY TOPPOWER STP3005 is a compact, benchtop DC power supply delivering adjustable 0-30V and up to 5A current with high accuracy. Featuring triple safety protections, a 3-digit LED display, and automatic voltage/current mode switching, it’s ideal for electronics testing, battery charging, and research. Lightweight and reliable, it’s a top choice for professionals and DIY enthusiasts alike.

## Description

DC Power Supply Variable,Lab Bench Power Supply Adjustable 30V 5A 3 Digital Display,for Circuit Test,Electrolysis,DIY Electronics Testing, Battery Charging,Repairing,Researching,SKY TOPPOWER STP3005: desertcart.com: Industrial & Scientific

Review: performs well, reliable - Perfect for my bench test needs. Easy to use and the only suggestion I can make is that the from panel labels for V/A fine/course should be labeled better. Its easy to make the mistake of using the wrong knob for adjusting fine voltage/current when in the midst of a test
Review: Good unit at a good price point. - Does the job well. Design of power cable could be revisited. Bulky attachment adds several inches to the unit depth, perhaps a right angle plug would be better.

## Features

- Entry Level DC Variable Power Supply : SKY TOPPOWER 30V 5A bench power supply variable with high accuracy : 0.1V(100mV) and 0.01A(10mA) regulated power supplies; Make it more convenient to set your desired voltage and curren in the range of 0-30V and 0-5A; 3 LED digital display lab power supply with alligator clip leads; Please go to visit our video if not know how to preset the current and voltage
- Grounding Wire and Anti-reverse Connection Protection: SKY TOPPOWER dc power supply variable 30v 5a has unique function: grounding wire and anti-reverse connection protection; Double protection for the safety of the operator, but also to protect the equipment and power supply; Increased safety and reliability of equipment
- Multiple Protections: DC power supply has Thermal protection,Limit current protection,Voltage overload,Short-circuit protection to better protect your device from damage,ensure the safety; Built-in fan reduce the operation noise,prolonging the life of product effectively
- Constant Voltage and Current Mode: The bench power supply constant voltage and current mode could automatically switch with load changes; if the load current is less than the preset current limiting value; it could be as a constant voltage source; lf the load current becomes equal to or greater than the preset current limit, the unit will automatically
- Widely Application: Suitable for students, DIY electronics enthusiasts, factory workshops, laboratory technicians and other workers to use; for the lab,electronic equipments maintenance,products line, car repair and battery charging,anodizing,scientific research and teaching,Great present choice for DIY hobbyist
- Compact and Lightweight: The SKY TOPPOWER STP-series variable power supply is made even more compact, measuring only 8.89(D)x3.3(W)x5.5(H)inches and weighing approx. 2.75lbs, small volume, light weight,which can greatly save valuable space on your workbench and easy to carry
- Customer Service: SKY TOPPOWER DC Power Supplies can provide professional technical support sevices, 7/24 customer service provided; Please contact SKY TOPPOWER Team for any questions on using the PSU

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07GCJ5QHF |
| Amperage | 5 Amps |
| Best Sellers Rank | #67,341 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #48 in Lab Power Supplies #96 in Life Science Supplies |
| Brand | SKY TOPPOWER |
| Color | 0-30V/0-5A |
| Connector Type | Barrel Connector |
| Connector Type Used on Cable | Barrel Connector |
| Customer Reviews | 4.4 out of 5 stars 521 Reviews |
| Enclosure Material | Plastic |
| Form Factor | benchtop |
| Input Voltage | 110 Volts (AC) |
| Item Weight | 1.3 Kilograms |
| Manufacturer | SKY TOPPOWER |
| Material | Plastic |
| Maximum Power | 150 Watts |
| Model Number | STP3005 |
| Output Current | 5 Amps |
| Output Voltage | 110 Volts |
| Output Wattage | 150 Watts |
| UPC | 704888827963 |

## Product Details

- **Brand:** SKY TOPPOWER
- **Color:** 0-30V/0-5A
- **Item Weight:** 1.3 Kilograms
- **Connector Type:** Barrel Connector
- **Input Voltage:** 110 Volts (AC)

## Images

![DC Power Supply Variable,Lab Bench Power Supply Adjustable 30V 5A 3 Digital Display,for Circuit Test,Electrolysis,DIY Electronics Testing, Battery Charging,Repairing,Researching,SKY TOPPOWER STP3005 - Image 1](https://m.media-amazon.com/images/I/61p-IE1HBCL.jpg)

## Available Options

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

## Questions & Answers

**Q: can this supply the same amount of power as three 9 volt batteries would? Looking to get 27 volt. Thank you all**
A: It can provide 27 volts, but you need to know how much current also.  It is capable of up to 5 amps continuous.  So AMPs are also important.  But 27 volts, yes.

**Q: Will this work gor electroforming?**
A: Thank  you for your question. 
SKY TOPPOWER's 30V 5A dc bench power supply could work for electroforming. Please come to us for any other power supply, such as 60v 5a, 30v 10a and so on.
Please do not hesitate to contact us for any usage  query.

**Q: Can the device be used for galvanizing?**
A: If you are referring to zinc plating, yes, that is why I purchased this power supply and it works well. The challenge is in the solution that you will be using in the plating bath, depending on the results you are trying to achieve and for what purpose.

**Q: Can this unit control the heating coil in a melting furnace**
A: If the coil doesn't exceed the power supply's output rating.

## Customer Reviews

### ⭐⭐⭐⭐⭐ performs well, reliable
*by D***A on November 22, 2025*

Perfect for my bench test needs. Easy to use and the only suggestion I can make is that the from panel labels for V/A fine/course should be labeled better. Its easy to make the mistake of using the wrong knob for adjusting fine voltage/current when in the midst of a test

### ⭐⭐⭐⭐⭐ Good unit at a good price point.
*by E***D on February 7, 2025*

Does the job well. Design of power cable could be revisited. Bulky attachment adds several inches to the unit depth, perhaps a right angle plug would be better.

### ⭐⭐⭐⭐⭐ light duty power supply
*by G***. on June 20, 2023*

I got the 10amp model just as a safety buffer. Most of my stuff used on it is 2 to 5 amps max. This power supply never seems to struggle under load and is very quiet.The display is easy to read, and the included instructions could be understood by anyone close-by. Fan comes on automatically when required by settings. It is also variable speed so it is quiet during most loaded operations. A great buy at intro prices for a basic no bones model that gets the job done.

## Frequently Bought Together

- DC Power Supply Variable,Lab Bench Power Supply Adjustable 30V 5A 3 Digital Display,for Circuit Test,Electrolysis,DIY Electronics Testing, Battery Charging,Repairing,Researching,SKY TOPPOWER STP3005
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-21*