--- product_id: 94771131 title: "HiLetgo 5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module" brand: "hiletgo" price: "€ 21.90" currency: EUR in_stock: true reviews_count: 9 category: "Hi Letgo" url: https://www.desertcart.es/products/94771131-hiletgo-5pcs-dc-dc-buck-step-down-module-6-20v store_origin: ES region: Spain --- # 97.5% efficiency max Input 6-24V wide range 3A max USB output HiLetgo 5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module **Brand:** hiletgo **Price:** € 21.90 **Availability:** ✅ In Stock ## Summary > 🔋 Power your projects with precision and protection! ## Quick Answers - **What is this?** HiLetgo 5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module by hiletgo - **How much does it cost?** € 21.90 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/94771131-hiletgo-5pcs-dc-dc-buck-step-down-module-6-20v) ## 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 DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module Description: High quality USB port, Output voltage indicator (RED) Small size, 26.4 (L) * 15 (W) * 7.4 (H) mm, Input with reverse polarity protection diode, will not damage when input connect incorrect, Ultra-low static current, 0.85 mA only. Do not need to add swith when connected to the car battery, can be connected to car cigarette lighter cable or ACC power supply cable Module Parameters: Module Properties: non-isolated buck module (BUCK) synchronous rectification Input voltage: DC 6-24VOutput voltage: 5.1-5.2V Output current: 3A MAX (please enhance heat dissipation when full load using), the actual test result input 12V output current 2A do not need to enhance heat dissipation. Conversion efficiency: can up to 97.5% (6.5V step down to 5V 0.7A) (after short reverse protection and fuses test value) Switch frequency: 500KHz Output ripple: 10mV around (12V to 5V3A) 20M bandwidth Output indicator: Output voltage indicator is red Operating temperature: Industrial grade (-40 ¡æ to + 85 ¡æ) (the higher the ambient temperature, the lower the output power) Output overvoltage protection: input 1.5A fuse, output 5V have 300W TVS tube clamp protection. Full load temperature: 30 ° CStatic current: 0.85 mA Load regulation: ±1%Voltage Regulation: ±0.5% Dynamic response speed: 5% 200uSInput reverse polarity protection: Yes, there is reverse polarity protection diodeConnection mode: WeldingInput mode: Welding Output mode: USB Package Including: 5 * USB DC-DC Step Down Module Review: These run Raspberry Pi 3 B+ and Pi 4 with no power issues. - I bought 15 of these, and run them directly from Creality Ender 3 printer power supplies (which are 24V), so that I can integrate my Pi's into the printers, and also free up precious wall plugs that I was needlessly running out of by using pi power supplies. The first batch of these arrived all bent up inside their bag, and I had no issue with them replacing them. Out of the 15, I had one that would not power on, and one that would give me the lightning bolt icon in octoprint, signifying that the pi was not getting enough current. All the other ones worked flawlessly and had no issues with underpowering even the pi 4's. For the price, and the ability to supply enough power in this small form factor, I can overlook 2 out of 15 of them being bad. Also, I saw earlier comments stating that they did not have positive and negative marked out, but they must have rectified that because mine were labeled. Review: Power for my raspberry pi - I built a project that requires 12volts DC but also includes a Raspberry Pi 3B+ which runs on 5volts from a USB port. I tapped the 12v supply to feed one of these modules and was able to simply plug in the pi with a short USB cable. Seems to work fine, and saved me from having to use two separate wall warts just to power this project. The boards arrived as two sets of three modules each, so you need to separate them yourself. The PC board is lightly scored between modules so you can snap them apart. I’m sure the remaining ones will find a use in some future projects. ## Features - USB Charger Module - DC-DC Module - Compatible to Arduino ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01HXU1C6U | | Best Sellers Rank | #193,737 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #783 in Power Converters | | Brand | HiLetgo | | Color | Red | | Customer Reviews | 4.4 4.4 out of 5 stars (403) | | Input Voltage | 6 Volts | | Manufacturer | HiLetgo | | Mfr Part Number | 3-01-1126-B | | Model Number | HiLetgo-... | | Number of Outlets | 1 | | Output Voltage | 5.1 Volts (DC) | | Plug Type | NO | | Unit Count | 5.0 Count | ## Product Details - **Brand:** HiLetgo - **Color:** Red - **Input Voltage:** 6 Volts - **Output Voltage:** 5.1 Volts (DC) - **Plug Format:** NO ## Images ![HiLetgo 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) ![HiLetgo 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) ![HiLetgo 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) ![HiLetgo 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) ![HiLetgo 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/61z6AiQNhGL.jpg) ## Available Options This product comes in different **Size** options. ## 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ These run Raspberry Pi 3 B+ and Pi 4 with no power issues. *by I***3 on February 28, 2021* I bought 15 of these, and run them directly from Creality Ender 3 printer power supplies (which are 24V), so that I can integrate my Pi's into the printers, and also free up precious wall plugs that I was needlessly running out of by using pi power supplies. The first batch of these arrived all bent up inside their bag, and I had no issue with them replacing them. Out of the 15, I had one that would not power on, and one that would give me the lightning bolt icon in octoprint, signifying that the pi was not getting enough current. All the other ones worked flawlessly and had no issues with underpowering even the pi 4's. For the price, and the ability to supply enough power in this small form factor, I can overlook 2 out of 15 of them being bad. Also, I saw earlier comments stating that they did not have positive and negative marked out, but they must have rectified that because mine were labeled. ### ⭐⭐⭐⭐⭐ Power for my raspberry pi *by D***A on November 13, 2024* I built a project that requires 12volts DC but also includes a Raspberry Pi 3B+ which runs on 5volts from a USB port. I tapped the 12v supply to feed one of these modules and was able to simply plug in the pi with a short USB cable. Seems to work fine, and saved me from having to use two separate wall warts just to power this project. The boards arrived as two sets of three modules each, so you need to separate them yourself. The PC board is lightly scored between modules so you can snap them apart. I’m sure the remaining ones will find a use in some future projects. ### ⭐⭐⭐⭐ Works as described *by A***B on March 9, 2026* They work great nice and small, not 5 stars because I can't figure out how to turn off the red led ## Frequently Bought Together - HiLetgo 5pcs DC-DC Buck Step Down Module 6-20V 12V/20V to 5V 3A USB Charger Module - ELNONE 2PCS 18AWG DC Power Cable, 1M/3.3FT 7A 5.5mm x 2.5mm Barrel Plug Connector Pigtail 5525 to Bare Wire Open End Cable with Wire Connector for Security Surveillance Camera - UGREEN Aux to Bluetooth 5.3 Adapter 3.5mm Bluetooth Receiver for Car USB 2.0 to 3.5mm Jack Kit with Built-in Microphone Aux Input for Hands-Free Calls Compatible with Car Speaker and Home Audio --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.es/products/94771131-hiletgo-5pcs-dc-dc-buck-step-down-module-6-20v](https://www.desertcart.es/products/94771131-hiletgo-5pcs-dc-dc-buck-step-down-module-6-20v) --- *Product available on Desertcart Spain* *Store origin: ES* *Last updated: 2026-04-25*