--- product_id: 287791001 title: "DC Converter Voltage 12V to 5V 3A 15W Buck Converter Module, DC Reduced Voltage Regulator Car Power Adapter with Output Power Adapter" brand: "weewooday" price: "¥1787" currency: JPY in_stock: true category: "Weewooday" url: https://www.desertcart.jp/products/287791001-dc-converter-voltage-12v-to-5v-3a-15w-buck-converter store_origin: JP region: Japan --- # 96% efficiency power conversion Dual USB ports for simultaneous charging Smart multi-protection chip DC Converter Voltage 12V to 5V 3A 15W Buck Converter Module, DC Reduced Voltage Regulator Car Power Adapter with Output Power Adapter **Brand:** weewooday **Price:** ¥1787 **Availability:** ✅ In Stock ## Summary > 🔋 Power up smart, stay connected stronger. ## Quick Answers - **What is this?** DC Converter Voltage 12V to 5V 3A 15W Buck Converter Module, DC Reduced Voltage Regulator Car Power Adapter with Output Power Adapter by weewooday - **How much does it cost?** ¥1787 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/287791001-dc-converter-voltage-12v-to-5v-3a-15w-buck-converter) ## Best For - weewooday enthusiasts ## Why This Product - Trusted weewooday brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual USB Charging Ports:** Charge two devices simultaneously without compromise—perfect for the multitasking professional on the go. - • **Versatile Compatibility:** Ideal for GPS, dash cams, car audio, and more—power your essential tech with confidence everywhere you drive. - • **Compact & Lightweight Design:** At just 17.87g, this sleek module fits seamlessly into your car setup without bulk or fuss. - • **Robust Intelligent Protection:** Stay worry-free with built-in overvoltage, overcurrent, overtemperature, and short circuit safeguards. - • **Ultra-Efficient Power Conversion:** Maximize your device uptime with a stellar 96% energy conversion rate, minimizing wasted power and heat. ## Overview The Weewooday DC Converter efficiently steps down 12V DC input to a stable 5V output at up to 3A (15W max), featuring dual USB ports and a smart microprocessor chip that ensures comprehensive protection against electrical faults. Lightweight and compact, it’s designed for reliable power delivery to multiple car electronics, making it an essential upgrade for tech-savvy drivers. ## Description desertcart.com: DC Converter Voltage 12V to 5V 3A 15W Buck Converter Module, DC Reduced Voltage Regulator Car Power Adapter with Output Power Adapter : Electronics ## Features - Product information: input voltage: 12V DC; Output voltage: 5V; Output current: 3A maximum; No-load current: 10mA; Output power: 15 Watt maximum - High efficiency: the DC to DC converter 12V to 5V is designed with dual USB charging ports so 2 devices can charge at the same time; DC to DC reduced voltage converter features with integrated switch thin regulator module, so the conversion rate is up to 96% - Nice protection: our DC converter voltage regulator is equipped with an intelligent microprocessing chip, which provides overvoltage protection, overcurrent protection, over temperature protection and short circuit protection, with stable and sturdy performance - Applicable occasions: DC buck converter with intelligent protection design is reliable and suitable for a wide range of uses, suitable for GPS navigation, driving recorder, car radio, car audio, MP3/ MP4, walkie talkie, surveillance system, bus display, taxi advertising screen, LCD TV, LED, and so on - Warm tips: when using a voltage converter, the power of the device must be less than 15Watt; The DC reduced voltage converter is not compatible with partial Samsung phones ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08R64L68D | | Best Sellers Rank | #367,958 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,654 in Power Converters | | Brand | Weewooday | | Color | black | | Customer Reviews | 4.6 4.6 out of 5 stars (336) | | Input Voltage | 12 volts | | Item Weight | 17.87 g | | Manufacturer | Weewooday | | Mfr Part Number | Weewooday-DC Converter-01 | | Model Number | GSS4291 | | Number of Items | 1 | | Number of Outlets | 2 | | Number of Packs | 1 | | Output Voltage | 5 volts | | Plug Type | Cigarette Lighter Plug | | Power Source | DC power supply | | Unit Count | 1 Count | | Warranty Description | when using a voltage converter, the power of the device must be less than 15W; The DC reduced voltage converter is not compatible with partial Samsung phones | ## Product Details - **Brand:** Weewooday - **Color:** black - **Input Voltage:** 12 volts - **Item Weight:** 17.87 g - **Output Voltage:** 5 volts ## Images ![DC Converter Voltage 12V to 5V 3A 15W Buck Converter Module, DC Reduced Voltage Regulator Car Power Adapter with Output Power Adapter - Image 1](https://m.media-amazon.com/images/I/71AdmmvRQML.jpg) ## Questions & Answers **Q: Can this coverter's input wires be safely connected directly to a car battery?** A: Yes, they can be direct connected to batteries. The poster saying you can't because a car battery has too many amps is wrong devices only draw the amps they need. Hook a 1 and 10 amp device to the battery at the same time, each device will draw 1 and 10 amps respectively. Also agree with them, if you do it protect it with a fuse otherwise if the device fails/shorts all the power of the battery will go through the device and it will likely catch fire. If protected by a fuse, the fuse will blow. **Q: What size fuse do I need for that?** A: You could look in your vehicles owners manual and determine what size fuse runs whatever circuit you're tying in to... I tied it to the cigarette lighter so look in owners manual for fuse size of cigarette lighter circuit. **Q: Does this get hot? I was thinking about using double sided tape to stick it to a plastic car interior part** A: No, it won't. Please kindly note that the power of the device must be less than 15W when using a voltage converter. **Q: Does the converter draw any power if no usb device is plugged into it?** A: It doesn’t draw any until something is plugged into it. Once pos and neg are hooked up it is always hot. It’s put together nicely too, I’m happy with it. --- ## 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.jp/products/287791001-dc-converter-voltage-12v-to-5v-3a-15w-buck-converter](https://www.desertcart.jp/products/287791001-dc-converter-voltage-12v-to-5v-3a-15w-buck-converter) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-11-13*