--- product_id: 265557124 title: "WHDTS DC-DC USB Step UP/Down Power Supply Module Adjustable Boost Buck Converter Voltmeter Ammeter Battery Capacity Tester 14746BA" brand: "gxcdizx" price: "€ 114.34" currency: EUR in_stock: true reviews_count: 5 category: "Gxcdizx" url: https://www.desertcart.fr/products/265557124-whdts-dc-dc-usb-step-up-down-power-supply-module store_origin: FR region: France --- # 20A max output current Adjustable voltage 1.2V-35V Overcurrent & short circuit protection WHDTS DC-DC USB Step UP/Down Power Supply Module Adjustable Boost Buck Converter Voltmeter Ammeter Battery Capacity Tester 14746BA **Brand:** gxcdizx **Price:** € 114.34 **Availability:** ✅ In Stock ## Summary > ⚡ Power your projects like a pro — precision, protection, performance! ## Quick Answers - **What is this?** WHDTS DC-DC USB Step UP/Down Power Supply Module Adjustable Boost Buck Converter Voltmeter Ammeter Battery Capacity Tester 14746BA by gxcdizx - **How much does it cost?** € 114.34 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/265557124-whdts-dc-dc-usb-step-up-down-power-supply-module) ## Best For - gxcdizx enthusiasts ## Why This Product - Trusted gxcdizx brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust 20A Output:** Delivers up to 20 amps with heat sink support for heavy-duty applications. - • **Built-in Safety Shield:** Advanced overcurrent, short circuit, and anti-backflow protections keep your devices safe. - • **Precision Power Control:** Fine-tune voltage and current for any project with dual potentiometers. - • **Versatile Industrial Use:** Perfect for automation, LED lighting, solar regulation, battery charging, and more. - • **High Efficiency & Compact:** 96% conversion efficiency in a sleek 60x52x29mm form factor fits any workspace. ## Overview The WHDTS 14746BA is a high-performance DC-DC step-up/down power supply module featuring adjustable constant voltage and current output up to 20A. Designed for professionals, it offers robust protections including overcurrent, short circuit, and anti-backflow, ensuring safe and reliable operation across diverse applications such as industrial automation, battery charging, and renewable energy systems. Compact and efficient, it delivers up to 96% conversion efficiency within a durable, rack-mountable design. ## Description This 20A DC-DC high power supply CVCC constant voltage constant current non-isolated Step-down BUCK Power Module supports to adjust output voltage and output current. Feature: 1>. Constant voltage constant current 2>. Adjustable output voltage 3>. Adjustable output current 4>. Non-isolated output 5>. Support output short circuit protection Wide Application: 1>. Industrial Automation 2>. Scientific Research Equipment 3>. LED Lighting 4>. Air Purification 5>. Civil Equipment 6>. Solar Panel Voltage Regulator 7>. Battery Charging 8>. Wind Turbines Parameter: 1>. Size: 60*52*29mm 2>. Input Voltage: DC 6V~40V 3>. Module Type: Non-isolated 4>. Output Voltage: DC 1.2V~35V 5>. Output Current: 20A(Max and it needs to add a heat sink if current is more than 10A) 6>. Work frequency: 150KHz 7>. Conversion efficiency: 96% 8>. Over Current Protection: Yes 9>. Short Circuit Protection: Yes 10>. Output anti-backflow protection: Yes 11>. Operating Temperature: -20℃~75℃ 12>. Operating Humidity: 5%~95%RH Package Included: 1 x 20A DC-DC CVCC High Power Supply Module Using Steps: 1.Adjust Output Voltage: Adjust CV potentiometer to change output voltage to meet target value. 2. Adjust Output Current: 1>. Rotate CC potentiometer counterclockwise more than 30 full turns. 2>. Connect to load such as LED and ammeter; or Connect to rechargeable battery(discharge off the electricity first and then recharge). 3>. Rotate CC potentiometer constant current potentiometer clockwise to set output current to meet target value. Review: Excellent. Good quality. These really simplify my use in circuits. Review: This power supply feels really sturdy and well-built. It outputs power very consistently and has a wide range of voltages. The small potentiometers can be tricky but do work well. Everything is as-described and should work well in any num er of projects/applications. ## Features - ✔【20A CVCC Step-down Power Module w/Overcurrent Protection】--This power module can be used as a practical DC adjustable CVCC constant voltage constant current buck power supply module. Working Voltage: DC 6V-40V, Output Voltage: DC 1.2V-35V, Output Current: 20A(Max and it needs to add a heat sink if current is more than 10A). Module Type: Non-isolated. - ✔【Used as A Charger】--This boost power module can also be used as a simple charger. You can use it to charge rechargeable battery. In this situation, the output voltage should be the same with the battery’s work voltage. Check and follow the product images for specific using steps. - ✔【Strong Self-protection Ability】--This buck power module has powerful protection functions, including Over Current Protection and Short Circuit Protection. And anti-backflow protection makes it possible to connect to the battery to charge directly. - ✔【Wide Application】--①Industrial Automation. ②Scientific Research Equipment. ③LED Lighting. ④Air Purification. ⑤Civil Equipment. ⑥Solar Panel Voltage Regulator. ⑦Battery Charging. ⑧Wind Turbines. - ✔【Perfect After-Sale Service, Supports Wholesale】: This buck power module requires basic electronic knowledge and hands-on ability. Please read the using steps before use. Any issues, please do not hesitate to contact us directly for further help. WHDTS has long been engaged in Electronics Related Products wholesale and retail business. Welcome letter to discuss the wholesale business. The bigger the amount is, the more favorable the price is. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0819Y8PJZ | | Brand Name | Gxcdizx | | Customer Reviews | 3.7 3.7 out of 5 stars (91) | | Item Weight | 3.84 Ounces | | Manufacturer | WHDTS | | Model | 14746BA | | Mounting Type | Rack Mount | | Part Number | 14746BA | | Power Source | Battery Powered | | UPC | 192188039405 | ## Product Details - **Brand:** Gxcdizx - **Item weight:** 3.84 Ounces - **Mounting type:** Rack Mount - **Power source:** Battery Powered - **UPC:** 192188039405 ## Images ![WHDTS DC-DC USB Step UP/Down Power Supply Module Adjustable Boost Buck Converter Voltmeter Ammeter Battery Capacity Tester 14746BA - Image 1](https://m.media-amazon.com/images/I/71BQX-TnX1L.jpg) ![WHDTS DC-DC USB Step UP/Down Power Supply Module Adjustable Boost Buck Converter Voltmeter Ammeter Battery Capacity Tester 14746BA - Image 2](https://m.media-amazon.com/images/I/71i7TIz-kwL.jpg) ![WHDTS DC-DC USB Step UP/Down Power Supply Module Adjustable Boost Buck Converter Voltmeter Ammeter Battery Capacity Tester 14746BA - Image 3](https://m.media-amazon.com/images/I/71GY6UWow-L.jpg) ![WHDTS DC-DC USB Step UP/Down Power Supply Module Adjustable Boost Buck Converter Voltmeter Ammeter Battery Capacity Tester 14746BA - Image 4](https://m.media-amazon.com/images/I/71tmf24nyrL.jpg) ![WHDTS DC-DC USB Step UP/Down Power Supply Module Adjustable Boost Buck Converter Voltmeter Ammeter Battery Capacity Tester 14746BA - Image 5](https://m.media-amazon.com/images/I/71LyT3PPYiL.jpg) ## Questions & Answers **Q: what material are the fins made of?** A: Aluminum **Q: want to increase voltage to recharge dash cam battery (hard wire to vehicle). Battery 12V, 10 Amps, will this work? Low voltage warning.** A: this should work. **Q: For the whdts 20a model - what is the adjustable range for the constant current output? specifically - what is the low value of current !!** A: They are 6v-40v. If you need to go from 12v lower may I suggest a downstep converter. **Q: does the 20A buck boost really not come with a on-off switch, thats what the picture and my module look like and how to use the 3 hole on/off deal** A: No On/Off switch included. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***R on 11 June 2021* Excellent. Good quality. These really simplify my use in circuits. ### ⭐⭐⭐⭐⭐ Review *by L***U on 7 December 2019* This power supply feels really sturdy and well-built. It outputs power very consistently and has a wide range of voltages. The small potentiometers can be tricky but do work well. Everything is as-described and should work well in any num er of projects/applications. ### ⭐⭐⭐ Review *by R***D on 9 September 2021* Ne supporte pas 20A , max 15A et à cette puissance la bobine surchauffe et boucane. À 10A le circuit fonctionne très bien. ## Frequently Bought Together - 20A Power Supply Module DC-DC 6V-40V to 1.2V-35V Step Down Buck Converter Adjustable Buck Adapter CVCC Constant Voltage Constant Current Converter LED Driver - Eiechip LED Digital Voltmeter Ammeter, Mini DC Digital Multimeter 100V 10A, Blue Red LED Amp Dual Digital Display Volt Meter Gauge, Car Current Monitor Tester 0.28" --- ## 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.fr/products/265557124-whdts-dc-dc-usb-step-up-down-power-supply-module](https://www.desertcart.fr/products/265557124-whdts-dc-dc-usb-step-up-down-power-supply-module) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-04-25*