---
product_id: 107170629
title: "12V DC Voltmeter Color LED Digital Display - Waterproof Volt Meter Voltage Scale Gauge 5-15V Battery Tester for Marine Car Motorcycle Truck Boat RV without Panel, Directly Install or Replaced on Panel"
brand: "thalassa"
price: "¥11892"
currency: JPY
in_stock: true
reviews_count: 5
url: https://www.desertcart.jp/products/107170629-12v-dc-voltmeter-color-led-digital-display-waterproof-volt-meter
store_origin: JP
region: Japan
---

# IP65 Waterproof LED Display 5-15V Range 12V DC Voltmeter Color LED Digital Display - Waterproof Volt Meter Voltage Scale Gauge 5-15V Battery Tester for Marine Car Motorcycle Truck Boat RV without Panel, Directly Install or Replaced on Panel

**Brand:** thalassa
**Price:** ¥11892
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade Your Ride with Confidence!

## Quick Answers

- **What is this?** 12V DC Voltmeter Color LED Digital Display - Waterproof Volt Meter Voltage Scale Gauge 5-15V Battery Tester for Marine Car Motorcycle Truck Boat RV without Panel, Directly Install or Replaced on Panel by thalassa
- **How much does it cost?** ¥11892 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/107170629-12v-dc-voltmeter-color-led-digital-display-waterproof-volt-meter)

## Best For

- thalassa enthusiasts

## Why This Product

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

## Key Features

- • **🌍 Eco-Friendly:** Certified CE and RoHS, ensuring a sustainable choice.
- • **🛡️ Safety First:** Flame retardant materials and reverse connection protection.
- • **🔒 Easy Installation:** Twist-and-lock design for hassle-free setup in any panel.
- • **🔍 Precision Monitoring:** Stay ahead of battery health with accurate voltage readings.
- • **🌟 Bright LED Indicators:** Color-coded alerts for battery status at a glance.

## Overview

The 12V DC Voltmeter is a compact, waterproof voltage gauge designed for easy installation in various vehicles, including cars, motorcycles, and boats. It features a bright LED display with color-coded indicators for battery health, ensuring you never miss a critical voltage reading. Built with safety in mind, this voltmeter is made from flame-retardant materials and includes reverse connection protection, making it a reliable choice for monitoring your battery's performance.

## Description

12V DC Voltmeter Color LED Digital Display - Waterproof Volt Meter Voltage Scale Gauge 5-15V Battery Tester for Marine Car Motorcycle Truck Boat RV without Panel, Directly Install or Replaced on Panel

## Features

- Please Reasonable - Choice voltmeter before you purchase,it is Generally used in 12/24V. ！！！NOT suitable for the motorcycle battery is 48V,It will lead the Voltage reading is incorrect.
- 5 - 15V Voltage Measuring Range - Orange Light: 11.3V to 11.9V indicate the battery should be changed, Yellow Light: 12.0V to 12.5V indicate normal when the car engine is OFF, Green Light: 12.6V to 15V indicate normal when the engine is ON. When it is lower than 5V, the number is displayed, but the surrounding lights are not bright. Shows very accurate voltage and with the bright display.
- Simple Twist & Lock Design - This Genuine Marine mini voltage gauge fits in a 1.2in diameter panel hole, a nylon retaining nut holds the meter in place. Twist-and-Lock system. Mini size and easy to install, great for checking Voltage.
- Best Accessory - Can directly replace the original function of the control panel, upgrade the panel. Used to monitor the storage-battery voltage, with reverse connection protection, it won’t burn out even if wires are reversely connected.Timely grasp the state of your battery between full charged and discharged.Voltage measurement purposes can also be used for other products.include 2 terminals for installation.
- Safety - High Grade Flame Retardant Materials, IP65 Waterproof, CE and Rohs Certify, Totally Environment Friendly;Universal fits most DC 12-24V Motorbike Car / Boat / ATV / UTV / Camper / Caravans / Travel / Caravans travel trailer etc. Help monitor the storage-battery voltage, LED will alarm flash if the voltage is higher than 15V. You can directly punched or replaced on our genuine marine panel.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | THALASSA |
| Power Source | Battery Powered |
| Color | Measuring Range of 5-15V |
| Item Weight | 0.7 Ounces |
| Min. Operating Voltage | 5 Volts |
| Measurement Type | Voltmeter |
| UPC | 676422763757 |
| Manufacturer | Genuine Marine |
| Item Weight | 0.7 ounces |
| Package Dimensions | 4.72 x 1.81 x 0.39 inches |
| Item model number | ST0023A |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | ST0023A |

## Product Details

- **Brand:** THALASSA
- **Power Source:** Battery Powered
- **Color:** Measuring Range of 5-15V
- **Item Weight:** 0.7 Ounces
- **Min. Operating Voltage:** 5 Volts

## Images

![12V DC Voltmeter Color LED Digital Display - Waterproof Volt Meter Voltage Scale Gauge 5-15V Battery Tester for Marine Car Motorcycle Truck Boat RV without Panel, Directly Install or Replaced on Panel - Image 1](https://m.media-amazon.com/images/I/519mIeQprQL.jpg)
![12V DC Voltmeter Color LED Digital Display - Waterproof Volt Meter Voltage Scale Gauge 5-15V Battery Tester for Marine Car Motorcycle Truck Boat RV without Panel, Directly Install or Replaced on Panel - Image 2](https://m.media-amazon.com/images/I/51c9qMLzdzL.jpg)
![12V DC Voltmeter Color LED Digital Display - Waterproof Volt Meter Voltage Scale Gauge 5-15V Battery Tester for Marine Car Motorcycle Truck Boat RV without Panel, Directly Install or Replaced on Panel - Image 3](https://m.media-amazon.com/images/I/51reASYlmoL.jpg)
![12V DC Voltmeter Color LED Digital Display - Waterproof Volt Meter Voltage Scale Gauge 5-15V Battery Tester for Marine Car Motorcycle Truck Boat RV without Panel, Directly Install or Replaced on Panel - Image 4](https://m.media-amazon.com/images/I/61LIX10eNPL.jpg)
![12V DC Voltmeter Color LED Digital Display - Waterproof Volt Meter Voltage Scale Gauge 5-15V Battery Tester for Marine Car Motorcycle Truck Boat RV without Panel, Directly Install or Replaced on Panel - Image 5](https://m.media-amazon.com/images/I/61-0g6epuoL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Very happy with it
  

*by O***Y on Reviewed in the United States on 29 March 2021*

Update July 29th 2021:  Still going strong coming up on the end of its second season in service.I find this is my go to even though I have a dedicated voltage gauge on my dash, and a voltage readout on my fish finder. The problem with them is the voltage drop caused by the wire run up to the dash and the fact they share the circuit with many other devices. This causes them to always read lower than the voltage at the battery terminals. This is installed in the battery box and gets its power directly from the main disconnect switch. The main disconnect is connected by a 1 foot 1 awg wire direct to the battery which results in negligible voltage loss.-original review-It was an easy Install in a boat battery box.Set it up so any time the boats main power switch is on then its on. My only complaint with this is the green bars can be kind of dazzling at night making it slightly difficult to read the rest of the display. Not something I would want right on my dash or in my main field of view will boating in darkness.  I've had it installed for a season now, and have had no issues. It is slightly sheltered from rain but it definitely gets water on it here and there.The bar graph is graduated intelligently. If all you have are red bars your battery has reached its 50% discharge. (I know i'm not accounting for load so that is not 100% accurate) 50% is usually as deep a discharge you wanna put on a deep cell going more than that will start to shorten its life span.If you only got a couple red bars there's a chance that the motor isn't gonna turn over.  If you have orange bars you're in great shape nothing to worry about. Green bars the battery is fully charged. Flashing numbers, your battery is being over charged.The simplicity of the color coding is my favorite part. My boat, which is also used by my brother has one 100 amp hour marine battery on board which does everything. Keeping an eye on voltages is important but with this thing you don't need to memorize numbers. Because the boat also has an unregulated charging system its possible to over charge the battery which the flashing indicator is excellent for grabbing your attention in that situation. It lets you know you need to start burning some extra juice like turn on the nav lights or something. It gives me peace of mind when my boat is being used by someone else that they have an easy to decipher indication of the battery's status. Even for me whos stared at plenty of "voltage vs charge remaining" charts Its still nice to be able to get a situation report with a quick glance and not have to think too hard about it.

### ⭐⭐⭐⭐⭐ 







  
  
    Helps me gauge my Inverter battery
  

*by D***R on Reviewed in the United States on 19 July 2020*

I don't need a full blown multimeter with a shunt for my purposes.  I need something to give me an idea of how much voltage I have left in my battery.  This provides just that.  Easy to use and install.  I put an on/off switch on mine because it is bright, and makes the camper bright at night.

### ⭐⭐⭐⭐⭐ 







  
  
    Very nice gauge
  

*by K***N on Reviewed in the United States on 22 December 2018*

Using it for my tractor and love the fact that it is very accurate and displays the red, yellow, green colors according to the standards for lead acid batteries. The display correctly shows all green lights at 13.5 Volt and it starts flashing when the Voltage exceeds 15 Volt (over voltage).

## Frequently Bought Together

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-22*