---
product_id: 94771131
title: "5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module"
brand: "hiletgo"
price: "€ 24.00"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/94771131-5pcs-dc-dc-buck-step-down-module-6-20v-12v
store_origin: FI
region: Finland
---

# 97.5% efficiency max Input 6-24V wide range 3A max USB output 5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module

**Brand:** hiletgo
**Price:** € 24.00
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your projects with precision and protection!

## Quick Answers

- **What is this?** 5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module by hiletgo
- **How much does it cost?** € 24.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/94771131-5pcs-dc-dc-buck-step-down-module-6-20v-12v)

## Best For

- hiletgo enthusiasts

## Why This Product

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

## Key Features

- • **Robust 3A USB Output:** Delivers a stable 5V at 3A max, ideal for fast charging and powering your USB devices reliably.
- • **Built-in Safety First:** Reverse polarity protection and overvoltage safeguards keep your devices and module safe under all conditions.
- • **Powerhouse Efficiency:** Up to 97.5% conversion efficiency means minimal energy waste and maximum performance.
- • **Compact & Industrial Grade:** Small footprint (26.4x15x7.4mm) with industrial temperature tolerance (-40°C to +85°C) for versatile, rugged use.
- • **Universal Voltage Compatibility:** Seamlessly steps down from 6-24V inputs, perfect for diverse power sources including car batteries.

## Overview

The HiLetgo 5pcs DC-DC Buck Step Down Module efficiently converts a wide input voltage range (6-24V) down to a stable 5V USB output at up to 3A. Featuring ultra-low static current, reverse polarity protection, and industrial-grade temperature tolerance, this compact module is perfect for powering USB devices from car batteries or other DC sources with high efficiency and safety.

## Description

HiLetgo 5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module

## Features

- USB Charger Module
- DC-DC Module
- Compatible to Arduino

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | HiLetgo |
| Part Number | 3-01-1126-B |
| Item Weight | 0.634 ounces |
| Package Dimensions | 3.74 x 2.83 x 0.94 inches |
| Item model number | HiLetgo-... |
| Is Discontinued By Manufacturer | No |
| Size | Small |
| Color | Red |
| Material | Plastic |
| Item Package Quantity | 1 |
| Plug Format | NO |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** HiLetgo
- **Color:** Red
- **Input Voltage:** 6 Volts
- **Output Voltage:** 5.1 Volts (DC)
- **Plug Format:** NO

## Images

![5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module - Image 1](https://m.media-amazon.com/images/I/71eTYfgqAPL.jpg)
![5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module - Image 2](https://m.media-amazon.com/images/I/61qOGQan8yL.jpg)
![5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module - Image 3](https://m.media-amazon.com/images/I/61K8rwT5QnL.jpg)
![5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module - Image 4](https://m.media-amazon.com/images/I/61V8E88OSyL.jpg)
![5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module - Image 5](https://m.media-amazon.com/images/I/51+Du5sRIiL.jpg)

## Questions & Answers

**Q: Hello! i need to use them with input 28vdc, will this voltage damage the unit? thanks!**
A: Anything over 20V will cause these units to shutdown. The original listing (when I bought them) said they had a range up to 24VDC input. None of them worked for me trying to use a 24VDC power supply. I have since come back to rate them and see that they have changed the description to indicate the max input voltage is 20VDC. I wasted my money on them.

**Q: Which is positive input and which is negative?**
A: Look closely,  the ground is attached to ground plane. The positive input is isolated from the ground plane.  It should be obvious.

**Q: I wanted to solder four 18650 flat top batteries to this. Can i recharge those batteries with this board after they are drained from charging phone?**
A: No, this board only works in one direction (high voltage -> 5V). 
You need a Li-Ion/LiPo charger board for recharging 18650 cells. 
E.g. https://www.amazon.com/Makerfocus-Charging-Lithium-Battery-Protection/dp/B071RG4YWM

**Q: How do i charge samsung galaxy a7 pad with this board? i use large solar panels dc. i don't use ac. i don't need to charge battery. the opposite way.**
A: The ac adapter’s turn ac into dc the battery in the phone is DC Just about everything that plugs in the AC converts it to DC for its internal workings televisions radios phones etc. USBs normally put out 5 V DC and 12 V DC you need to find out what your phone uses set the board to that DC voltage level and plug in your USB cable to your phone That’s basically the short and sweet for the actual hook up and all that information you’re gonna have to look on some stuff on the Internet

## Frequently Bought Together

- HiLetgo 5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module
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**Shop now:** [https://www.desertcart.fi/products/94771131-5pcs-dc-dc-buck-step-down-module-6-20v-12v](https://www.desertcart.fi/products/94771131-5pcs-dc-dc-buck-step-down-module-6-20v-12v)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-28*