---
product_id: 548008143
title: "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"
brand: "jessinie"
price: "267 kr"
currency: DKK
in_stock: true
reviews_count: 5
category: "Jessinie"
url: https://www.desertcart.dk/products/548008143-jessinie-zk-4kx-dc-dc-buck-boost-converter-regulator-cnc
store_origin: DK
region: Denmark
---

# 0.5-30V adjustable output voltage LCD displays voltage, current, power & more 0-4A adjustable current limit 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

**Brand:** jessinie
**Price:** 267 kr
**Availability:** ✅ In Stock

## Summary

> 🔌 Power up smart, stay ahead of the curve!

## Quick Answers

- **What is this?** 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 by jessinie
- **How much does it cost?** 267 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/548008143-jessinie-zk-4kx-dc-dc-buck-boost-converter-regulator-cnc)

## 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

- • **Robust Current Handling:** Sustain stable 3A output or push to 4A with enhanced cooling—power your projects without compromise.
- • **Versatile DIY Power Hub:** Perfect for solar charging, LED driving, battery management & custom electronics—your all-in-one power solution.
- • **Precision Voltage Control:** Dial in 0.5-30V output with CNC accuracy for flawless power delivery.
- • **Comprehensive LCD Monitoring:** Real-time display of input/output voltage, current, power, capacity & runtime keeps you in full control.
- • **Advanced Multi-Layer Protection:** Built-in safeguards against reverse polarity, over-voltage, over-current, overheating & more—engineered for worry-free operation.

## Overview

The JESSINIE ZK-4KX is a high-precision DC-DC buck-boost converter offering adjustable 0.5-30V output and up to 4A current with enhanced heat dissipation. Featuring a detailed LCD display for real-time monitoring and multiple customizable protection mechanisms, it’s ideal for DIY solar charging, LED driving, and battery management applications. Compact and reliable, it ensures efficient, safe, and versatile power conversion for professional-grade projects.

## Description

Anti-reverse connection protection at the input end, reverse connection will not burn; The output terminal prevents backflow, and there is no need to add a backflow prevention diode when charging the battery; The module can be set to turn on/off by default; Has a variety of software protection mechanisms, and the protection threshold is adjustable. After the module operating parameters exceed the protection threshold, the output is automatically turned off. The output ripple is small, with π-type filtering; Thickened heat sink Product parameters Input voltage: 5.0-30V Output voltage: 0.5-30V Output current: It can work stably at 3A for a long time and reach 4A under enhanced heat dissipation. Output power: 35W for natural heat dissipation and 50W for enhanced heat dissipation Voltage display resolution: 0.01V Current display resolution: 0.001A Operating frequency: 180KHZ Conversion efficiency: about 88% Soft start: Yes (very high power with load module may fail when starting) Protection mechanisms: Input anti-reverse connection; Output backflow prevention; Input undervoltage protection (4.8-30V adjustable, default 4.8V) Output overvoltage protection (0.5-31V adjustable, default 31V) Output overcurrent protection (0 -4.1A adjustable, default 4.1A) Output over-power protection (0-50W adjustable, default 50W) Over-temperature protection (80-110 ℃ adjustable, default 110 ℃) Timeout protection (0-100h adjustable, closed by default) Super capacity protection (0-60Ah adjustable, closed by default) Note: After the product triggers the protection mechanism, the output will automatically turn off, the LCD screen will display the protection code, press any key to exit the protection interface

Review: Displays the voltage and amp draw
Review: Loudspeaker amp turn on/ run Bluetooth adapter

## 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 | #144,578 in Electronics ( See Top 100 in Electronics ) #1,508 in International Power Adapters |
| Brand | JESSINIE |
| Color | grey,silver,blue |
| Colour | grey,silver,blue |
| Customer Reviews | 4.3 out of 5 stars 21 Reviews |
| Input Voltage | 30 Volts |
| Input voltage | 30 Volts |
| Item Type Name | Power Converter |
| Item Weight | 0.07 Kilograms |
| Item weight | 0.07 Kilograms |
| Manufacturer | JESSINIE |
| Model Number | ZK-4KX |
| Output Voltage | 30 Volts |
| Output voltage | 30 Volts |

## Product Details

- **Brand:** JESSINIE
- **Colour:** grey,silver,blue
- **Item weight:** 0.07 Kilograms
- **Input voltage:** 30 Volts
- **Output voltage:** 30 Volts

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/61Rjg3k3bbL.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/717a7wu3rrL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/717aaKbXL5L.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/71Cs5bnSOpL.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/71R7ORKfGqL.jpg)

## Customer Reviews

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



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



### ⭐⭐⭐⭐⭐ EXCELENTE
*by J***Z on 27 July 2024*



## Frequently Bought Together

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-25*