---
product_id: 101798759
title: "LONGWEI DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord"
brand: "longwei"
price: "฿6992"
currency: THB
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.th/products/101798759-longwei-dc-power-supply-variable-30v-10a-4-digital-led
store_origin: TH
region: Thailand
---

# 10A max current 4-digit LED display 30V max voltage LONGWEI DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord

**Brand:** longwei
**Price:** ฿6992
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Up Your Projects with Precision!

## Quick Answers

- **What is this?** LONGWEI DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord by longwei
- **How much does it cost?** ฿6992 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/101798759-longwei-dc-power-supply-variable-30v-10a-4-digital-led)

## Best For

- longwei enthusiasts

## Why This Product

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

## Key Features

- • **Safety First:** Equipped with multiple protection features to ensure safe operation and longevity.
- • **Risk-Free Purchase:** Enjoy a 30-day return policy and 12-month after-sale service for peace of mind.
- • **Versatile Applications:** Perfect for a variety of electronic projects and testing needs.
- • **Precision Power Control:** Achieve exact voltage and current adjustments with 0.01V and 0.01A accuracy.
- • **Whisper-Quiet Operation:** Intelligent fan technology for optimal heat dissipation and minimal noise.

## Overview

The LONGWEI DC Power Supply is a high-precision, adjustable regulated switching power supply featuring a clear 4-digit LED display. It offers a voltage range of 0-30V and a current range of 0-10A, ensuring accurate power delivery for various applications. With built-in safety features and intelligent heat management, this power supply is designed for durability and efficiency, making it an essential tool for professionals and hobbyists alike.

## Description

DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord

## Features

- ◆【High Precision, Wide Range】LONGWEI DC power supply is a professional power supply regulation device that designed with crystal clear, backlit 4-digit LED display of voltage, current, and power. Precise accuracy: 00.01V and 00.01A. You can easily tune it within 0-30V and 0-10A. Very durable and easy to observe even in low light conditions.
- ◆【High Quality with Essential Safety】Safety is our priority. Grounding wire, The power supply takes the function of limited flow protection, overpower protection, over temperature protection, voltage overload protection. greatly improving its working efficiency and lifespan!
- ◆【Excellent Heat Dissipation】Equipped with a big fan controlled by intelligent temperature control sensor and multiple heat radiation grooves on both sides, Intelligent fan offers excellent heat dissipation effect, which reduces the noise and prolongs the life of product effectively.
- ◆【Various Application】if it cannot adjust voltage lower than 6v or unable to hold at 5v.please see attached instruction or contact me directly.we will tell you how to adjust /fix it or choose a refund.thanks
- ◆【What You Get】1 x K3010D DC power supply, 1 x output power cord, 1 x Input power cord, 1 x test probes, 1 x User manual. (Buy Now Risk-Free with 30 days Free Of Return,we provide 12-Month after sale service, lifetime technical support. Please feel free to contact us if you have any concerns,we will reply to you to solve your problem in 24H.)

## Product Details

- **Brand:** LONGWEI
- **Material:** Crystal
- **Item Weight:** 3 Pounds
- **Input Voltage:** 2.4E+2 Volts
- **Amperage:** 10 Amps

## Images

![LONGWEI DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord - Image 1](https://m.media-amazon.com/images/I/611+NZaCoBL.jpg)

## Questions & Answers

**Q: Will it break if I short circuit it?**
A: NO, it will not .In fact, the terminals must be short circuited (just touch the two wires/alligator clips/probe tips together) in order to set the limits on the current (amps). The manual explains this.

**Q: do it retain power after power cut?**
A: Sorry, it can't, because this power supply doesn't have a battery

**Q: Can you give us a web link to the user manual?  ... If so, please do.**
A: dear Sir , could you contact me at vickie_tan@yahoo.com? we will give you a full details user manual and help to you operate the power supply if you get the technical problem。
 thank you

**Q: seller question.  does this have a manufacturer defect warranty?**
A: Buy Now Risk-Free with 30 days Free Of Return,we provide 12-Month after sale service, lifetime technical support. Please feel free to contact us if you have any concerns,we will reply to you to solve your problem in 24H

## Customer Reviews

### ⭐⭐⭐⭐⭐ The Best
*by G***O on September 21, 2023*

I am using it more than 2 years, for battery charging, li-ion and lead acid, works without any problem, I am leaving it on for days, no problem, I don't know how accurate it is but, really like it. also I changed reverse polarity diode twice, connected 100ah lead acid reversed and just diode died, changed it 4 month ago and work great again. Highly recommended. also it has 220v-110v switch, I live in Europe so I was searching for 220v power supply, I think best in price and also in this power supply category. :)

### ⭐⭐⭐⭐⭐ Great little power supply
*by O***O on May 1, 2025*

Great cost effective power supply, I need one to wake up my LiPO4 battery, it had discharged to the point the BMS wouldn’t allow charging. Fortunately, my batteries are serviceable and you can take the top off and have access to the individual cells. I was able to charge and balance all the individual cells..

### ⭐⭐⭐⭐⭐ This is an excellent product, and is perfect for hobbyists
*by A***R on May 28, 2020*

This is a very fine product for the money. I did a little test to verify output with my Fluke multimeter, and it was accurate as far as I could tell. The build quality seems solid, and I was surprised that they offered it with alligator clips in addition to the probes, so that was a nice selling point. I am a hobbyist, so I don't know if this would stand up to the rigor of a national laboratory, but if you're running a lab, you probably aren't shopping on Amazon for lab gear, are you? :-)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-28*