---
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: "125 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Jessinie"
url: https://www.desertcart.pl/products/493674501-zk-4kx-dc-dc-buck-boost-converter-regulator-cnc-adjustable
store_origin: PL
region: Poland
---

# 0.5-30V adjustable output Real-time LCD multi-parameter display 0-4A current limit control 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:** 125 zł
**Availability:** ✅ In Stock

## Summary

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

## 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?** 125 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/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

- • **DIY Solar & Beyond:** Versatile module perfect for solar charging, high-power LED driving, battery management & custom power projects
- • **Robust Safety Suite:** Comprehensive protections including anti-reverse, over-voltage, over-current, over-temperature & more for worry-free operation
- • **Precision Voltage Mastery:** Numerical CNC adjustment for ultra-accurate 0.5-30V output tuning
- • **Power Flexibility Unleashed:** Seamlessly boosts or bucks voltage with stable 3A continuous current, peaking at 4A with enhanced cooling
- • **Smart Multi-Parameter Display:** Integrated LCD shows input/output voltage, current, power, capacity & runtime for instant insights

## Overview

The JESSINIE ZK-4KX is a CNC-adjustable DC-DC buck-boost converter offering 0.5-30V output voltage and up to 4A current with real-time LCD monitoring. Designed for professional DIYers and solar enthusiasts, it features advanced protection mechanisms and versatile applications including battery charging and LED driving, ensuring reliable, precise power management in a compact, user-friendly module.

## 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 | #135,599 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #517 in Power Converters |
| Brand | JESSINIE |
| Color | grey,silver,blue |
| Customer Reviews | 4.4 4.4 out of 5 stars (26) |
| Input Voltage | 30 Volts |
| Item Type Name | Power Converter |
| Item Weight | 0.07 Kilograms |
| Manufacturer | JESSINIE |
| Mfr Part Number | ZK-4KX |
| Model Number | ZK-4KX |
| Output Voltage | 30 Volts (DC) |

## 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 Poland*
*Store origin: PL*
*Last updated: 2026-05-01*