---
product_id: 391065958
title: "Weewooday 1 Piece Waterproof 12v to 5v Converter DC-DC Buck Module Micro USB Power Adapter Car Power Converter Regulator Compatible with Vehicle Car Truck Volt"
brand: "weewooday"
price: "¥12498"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/391065958-weewooday-1-piece-waterproof-12v-to-5v-converter-dc-dc
store_origin: JP
region: Japan
---

# 96% high conversion efficiency Waterproof & shockproof epoxy sealed 3A max output current, 15W power Weewooday 1 Piece Waterproof 12v to 5v Converter DC-DC Buck Module Micro USB Power Adapter Car Power Converter Regulator Compatible with Vehicle Car Truck Volt

**Brand:** weewooday
**Price:** ¥12498
**Availability:** ✅ In Stock

## Summary

> 🔌 Power your ride with precision and protection!

## Quick Answers

- **What is this?** Weewooday 1 Piece Waterproof 12v to 5v Converter DC-DC Buck Module Micro USB Power Adapter Car Power Converter Regulator Compatible with Vehicle Car Truck Volt by weewooday
- **How much does it cost?** ¥12498 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/391065958-weewooday-1-piece-waterproof-12v-to-5v-converter-dc-dc)

## 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

- • **Smart Safety Shield:** Built-in intelligent chip guards against overvoltage, overcurrent, overheating, and short circuits for worry-free use.
- • **Versatile Compatibility:** Seamlessly powers GPS, dash cams, car audio, and more—your all-in-one vehicle power solution.
- • **Compact & Durable Design:** Slim, epoxy-sealed module resists water, dust, and shocks—engineered for the rugged road ahead.
- • **Ultra-Efficient Power Conversion:** Transforms 12V to 5V with a stellar 96% efficiency, minimizing heat and energy waste.
- • **Robust 15W Output with 3A Current:** Delivers stable power to your devices, perfect for in-car tech and gadgets.

## Overview

The Weewooday 12V to 5V DC-DC buck converter is a compact, waterproof power adapter designed for vehicle use. It efficiently converts input voltages from 8-20V down to a stable 5V output at up to 3A (15W max), featuring intelligent protection against electrical faults. Its epoxy-sealed housing ensures durability against moisture, dust, and shocks, making it ideal for powering a wide range of automotive electronics including GPS units, dash cams, and car audio systems.

## Description

1 Piece DC-DC buck converter module 12V to 5V micro USB power adapter compatible with ring alarm keypad  Practical to use: 12V to 5V power converter can connect any 5V Micro USB connected devices, including phones and tablets. Tested to be applied with the ring alarm keyboard.  Features: Synchronous rectification, the conversion rate is 96% or more, very low heat. Automatically protect against overvoltage, overcurrent, overtemperature and short circuit, and can work in normal condition when restored. Epoxy potting, shockproof, waterproof, moistureproof, dustproof, long-term stable and reliable quality. Ultra-thin, small size, high efficiency, easy to install and use. Input voltage: DC8-20V, 12V changes to 5V. Output parameter: DC5V3A, 15W.  Specifications: Size: 46 x 27 x 14 mm Color: as the picture shown  Package includes: 1 x Micro USB DC/DC Converter 12V to 5V 15W  Note: The brand names and any related models mentioned above are only for purposes of demonstrating compatibility, not for trademarks. Our trademark is Weewooday.

## Features

- 12V to 5V USB converter: input voltage: DC8-20V, 12V changes to 5V; Output current: 3A max; No-load current: 10mA; Output power: 15W max
- Micro USB connector and high conversion: our DC to DC converters have Micro USB charging ports; DC to DC buck converter has an integrated switch thin regulator module, and the conversion rate is as high as 96 percent
- Intelligent protection: 12V to 5V DC converter adopts intelligent micro-processing chip, which can automatically protect against overvoltage, overcurrent, overtemperature and short circuit; All epoxy sealed containers have waterproof housings
- Wide application: DC converter module 12V to 5V will be suitable for GPS navigation, driving recorder, electronic dog, car radio, car audio, MP3, MP4, walkie talkie, surveillance system, bus display, taxi advertising screen, driving recorder, LCD TV, LED, etc.
- Warm prompt: those devices' power must be lower than 15W when use this DC/DC converter 12V to 5V, and will not be compatible with partial Samsung phones

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Weewooday |
| Manufacturer | Weewooday |
| Model | 98f78aec-9b94-4678-a671-b04c7a01d3fa |
| Product Dimensions | 15.01 x 10.49 x 1.6 cm; 39.97 g |
| Item model number | 98f78aec-9b94-4678-a671-b04c7a01d3fa |
| Compatible Devices | Ringtone Makers, Tablets |
| Special Features | Short Circuit Protection |
| Number of items | 1 |
| Wattage | 15 Watts |
| Power Source | Corded Electric |
| Batteries Included | No |
| Batteries Required | No |
| Connector Type | USB |
| Mounting Type | Wall Mount |
| Manufacturer | Weewooday |
| Country of Origin | USA |
| Item Weight | 39.9 g |

## Product Details

- **Brand:** Weewooday
- **Colour:** Black
- **Item Weight:** 1.41 Ounces
- **Input Voltage:** 12 Volts
- **Item dimensions L x W x H:** 15 x 10.5 x 1.6 Centimeters

## Images

![Weewooday 1 Piece Waterproof 12v to 5v Converter DC-DC Buck Module Micro USB Power Adapter Car Power Converter Regulator Compatible with Vehicle Car Truck Volt - Image 1](https://m.media-amazon.com/images/I/614IP08UejL.jpg)
![Weewooday 1 Piece Waterproof 12v to 5v Converter DC-DC Buck Module Micro USB Power Adapter Car Power Converter Regulator Compatible with Vehicle Car Truck Volt - Image 2](https://m.media-amazon.com/images/I/71HfTHk75CL.jpg)
![Weewooday 1 Piece Waterproof 12v to 5v Converter DC-DC Buck Module Micro USB Power Adapter Car Power Converter Regulator Compatible with Vehicle Car Truck Volt - Image 3](https://m.media-amazon.com/images/I/71999kq7OnL.jpg)
![Weewooday 1 Piece Waterproof 12v to 5v Converter DC-DC Buck Module Micro USB Power Adapter Car Power Converter Regulator Compatible with Vehicle Car Truck Volt - Image 4](https://m.media-amazon.com/images/I/71HEvA-JEQL.jpg)
![Weewooday 1 Piece Waterproof 12v to 5v Converter DC-DC Buck Module Micro USB Power Adapter Car Power Converter Regulator Compatible with Vehicle Car Truck Volt - Image 5](https://m.media-amazon.com/images/I/61GLXmPksuL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Frequently Bought Together

- DC-DC Buck Converter Module 12V to 5V Micro USB Power Adapter Compatible with Ring Alarm Keypad (1 Piece)
- Ring Retrofit Alarm Kit - existing wired security system and Ring Alarm required, professional installation recommended
- Ring Alarm Keypad (2nd Gen)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-24*