---
product_id: 493674501
title: "ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell"
brand: "jessinie"
price: "243 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Jessinie"
url: https://www.desertcart.dk/products/493674501-zk-4kx-dc-dc-buck-boost-converter-regulator-cnc-adjustable
store_origin: DK
region: Denmark
---

# 0.5-30V adjustable output voltage Real-time LCD display of voltage, current & power 0-4A adjustable current limit ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell

**Brand:** jessinie
**Price:** 243 kr
**Availability:** ✅ In Stock

## Summary

> 🔌 Power your projects with precision and confidence!

## Quick Answers

- **What is this?** ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell by jessinie
- **How much does it cost?** 243 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/493674501-zk-4kx-dc-dc-buck-boost-converter-regulator-cnc-adjustable)

## Best For

- jessinie enthusiasts

## Why This Product

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

## Key Features

- • **Versatile DIY Power Hub:** Ideal for solar charging, LED driving, battery management & custom power projects
- • **Precision Voltage Control:** Numerical CNC adjustment for ultra-accurate 0.5-30V output tuning
- • **Dynamic Current Management:** Set and limit output current from 0 to 4A for safe, reliable power delivery
- • **Comprehensive LCD Monitoring:** Instant readout of input/output voltage, current, power, capacity & runtime
- • **Robust Multi-layer Protection:** Built-in safeguards against reverse polarity, over-voltage, over-current, overheating & more

## Overview

The JESSINIE ZK-4KX is a CNC-adjustable DC-DC buck-boost converter module offering 0.5-30V output voltage and up to 4A current with real-time LCD monitoring. Designed for DIY enthusiasts and professionals, it features multiple protection mechanisms and supports applications like solar battery charging, LED constant current driving, and custom power supply solutions.

## Description

desertcart.com: JESSINIE ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell : Electronics

Review: Nice variable power supply module. - This works great for a variable power supply. I’m using a 24 Volt 90 Watt laptop power adapter for the input. I have the boost converter set up to limit my 5 V output to 2.5Amps. The Voltage and Amp display on the unit match my Fluke meter readings. It took me a few minutes to figure out how to navigate the display functions using the push buttons. It’s not difficult after using it a few times.
Review: Displays the voltage and amp draw - Great power source…easy to hookup… compact size….love the readout and what it displays

## Features

- Numerical control adjustment, accurate and fast, can boost and step down, output voltage 0.5-30V arbitrary adjustment, limit current 0-4A arbitrary adjustment
- ZK-4KX is equipped with a LCD display module, which can display input voltage/output voltage/output current/output power/output capacity/output time and other parameters
- Input voltage: 5.0-30V, output voltage: 0.5-30V, output current: can work stably at 3A for a long time, and can reach 4A under enhanced heat dissipation
- It has a variety of protection mechanisms, such as input anti-reverse connection, output anti-backflow, input under-voltage protection, output over-voltage protection, output over-current protection, output over-power protection, over-temperature protection, overtime protection, and over-capacity protection
- ZK-4KX DC-DC Buck Boost Converter can be used as an ordinary buck/boost module with multiple protection mechanisms, and can also be used as a DIY solar controller, high-power LED constant current drive module, battery charging module, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B7MBNP4G |
| Best Sellers Rank | #162,528 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #654 in Power Converters |
| Customer Reviews | 4.4 4.4 out of 5 stars (26) |
| Date First Available | July 26, 2022 |
| Item Weight | 2.39 ounces |
| Item model number | ZK-4KX |
| Manufacturer | JESSINIE |
| Package Dimensions | 6.22 x 4.72 x 1.89 inches |

## Product Details

- **Brand:** JESSINIE
- **Color:** grey,silver,blue
- **Input Voltage:** 30 Volts
- **Item Weight:** 0.07 Kilograms
- **Output Voltage:** 30 Volts (DC)

## Images

![ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell - Image 1](https://m.media-amazon.com/images/I/61Rjg3k3bbL.jpg)
![ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell - Image 2](https://m.media-amazon.com/images/I/71Cs5bnSOpL.jpg)
![ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell - Image 3](https://m.media-amazon.com/images/I/717aaKbXL5L.jpg)
![ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell - Image 4](https://m.media-amazon.com/images/I/717a7wu3rrL.jpg)
![ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell - Image 5](https://m.media-amazon.com/images/I/71R7ORKfGqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice variable power supply module.
*by B***B on February 4, 2026*

This works great for a variable power supply. I’m using a 24 Volt 90 Watt laptop power adapter for the input. I have the boost converter set up to limit my 5 V output to 2.5Amps. The Voltage and Amp display on the unit match my Fluke meter readings. It took me a few minutes to figure out how to navigate the display functions using the push buttons. It’s not difficult after using it a few times.

### ⭐⭐⭐⭐⭐ Displays the voltage and amp draw
*by C***E on December 19, 2025*

Great power source…easy to hookup… compact size….love the readout and what it displays

### ⭐⭐⭐⭐⭐ Loudspeaker amp turn on/ run Bluetooth adapter
*by W***R on July 25, 2025*

Easy to use and convenient.

## Frequently Bought Together

- JESSINIE ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell
- ALLECIN L7812 7812 Voltage Regulator Output IC L7812CV Linear Voltage Regulators 1.5A 12V TO-220(Pack of 20pcs)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-22*