---
product_id: 157137598
title: "ANCEL BM300 12V Battery Monitor, Bluetooth 4.0 Automotive Voltmeter with Charging, Cranking System Test & Alarm - Compatible for Solar Power Systems, RVs, Motorcycles, Boats, Cars, and Trucks"
brand: "ancel"
price: "VT12839"
currency: VUV
in_stock: true
reviews_count: 12
category: "Ancel"
url: https://www.desertcart.vu/products/157137598-ancel-bm300-12v-battery-monitor-bluetooth-4-0-automotive-voltmeter
store_origin: VU
region: Vanuatu
---

# 99.5% voltage reading accuracy Bluetooth 4.0 wireless range 33ft 12V battery compatibility ANCEL BM300 12V Battery Monitor, Bluetooth 4.0 Automotive Voltmeter with Charging, Cranking System Test & Alarm - Compatible for Solar Power Systems, RVs, Motorcycles, Boats, Cars, and Trucks

**Brand:** ancel
**Price:** VT12839
**Availability:** ✅ In Stock

## Summary

> 🔋 Stay Powered, Stay Connected — The Ultimate Smart Battery Guardian

## Quick Answers

- **What is this?** ANCEL BM300 12V Battery Monitor, Bluetooth 4.0 Automotive Voltmeter with Charging, Cranking System Test & Alarm - Compatible for Solar Power Systems, RVs, Motorcycles, Boats, Cars, and Trucks by ancel
- **How much does it cost?** VT12839 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/157137598-ancel-bm300-12v-battery-monitor-bluetooth-4-0-automotive-voltmeter)

## Best For

- ancel enthusiasts

## Why This Product

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

## Key Features

- • **Smart Alerts & Safety:** Get instant app notifications for voltage anomalies or malfunctions, backed by reverse polarity protection and fire-resistant housing.
- • **Real-Time Battery Insights:** Monitor voltage, cranking, and charging health instantly via Bluetooth—stay ahead of battery failures.
- • **Universal 12V Compatibility:** Works flawlessly with all 12V batteries including AGM, GEL, EFB, and flooded types across cars, RVs, boats, motorcycles, and solar systems.
- • **Effortless One-Time Installation:** Attach once and forget it—continuous monitoring without draining your battery thanks to ultra-low 1.5mA power consumption.
- • **Trip Function for Usage Patterns:** Track 30-day battery performance trends and power consumption history to optimize your vehicle’s energy management.

## Overview

The ANCEL BM300 is a compact, Bluetooth 4.0-enabled 12V battery monitor designed for professional-grade real-time tracking of automotive and solar power batteries. It delivers over 99.5% accurate voltage readings, supports multiple battery types, and offers advanced safety features including reverse polarity protection and fire-resistant housing. With seamless app integration and smart alerts, it empowers millennial managers to proactively maintain battery health, avoid costly replacements, and optimize energy usage across vehicles and off-grid systems.

## Description

Buy ANCEL BM300 12V Battery Monitor, Bluetooth 4.0 Automotive Voltmeter with Charging, Cranking System Test & Alarm - Compatible for Solar Power Systems, RVs, Motorcycles, Boats, Cars, and Trucks: Battery Testers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Effective and easy to install - Easy to install. I've only used the corresponding phone app to monitor volts and state of charge. We're chasing an intermittent parasitic draw, so it's easy to check if the draw has been active or not. Instead of guessing and hoping that the battery has enough juice to perform a start, this device gives you actual data so you can make better decisions and get ahead of the problem.
Review: A Very Good Charging system and Battery Analyzer. - This is a great product. It does exactly what it says it will do. Packed with enough features for you to monitor your battery’s performance or lack of. The app is very user friendly, once you take the time to explore, you’ll realize how much information is at your fingertips. Even when you’re out of bluetooth range, the information is still being stored and waiting. I think I was able to go as far back as five days and view my battery’s performance data. Customer service is excellent. If you ever have any issues, they will go to the extreme to help you. Believe me. Now the Bluetooth signal maybe an issue for some but don’t ask for more than many other devices cannot offer either. Plus understand that the module is inside your engine bay (in most cases). Just get it. I would like to thank my Ford F150 Powerboost members who introduced me to this nifty piece of equipment. Because of how my truck’s hood comes down very close to my main battery, I have to keep it on the side.

## Features

- ESSENTIAL TOOL FOR YOUR GARAGE: Keep your car battery in top condition and protect it from the effects of disuse and harsh weather with the BM300. This smart battery monitor tracks important metrics like voltage, cranking performance, charging system health, and travel history. With real-time alerts and continuous monitoring, it helps you take proactive action to keep your battery in peak condition and avoid expensive replacements
- SEAMLESS MONITORING VIA BLUETOOTH: No more staying close to the monitor! This compact 3.2-ounce battery monitor allows you to easily track real-time battery data from inside your car or up to 33 feet away. Whether it’s rainy, sunny, or snowy, it keeps you connected with ease. Note: Bluetooth connectivity may be affected by extreme cold or obstacles. For optimal performance, use it in a clear, open area with suitable temperatures
- EASY TO USE: Install once and permanently attach to your battery, saving the hassle of repetitive installation. Access battery health data directly from your phone and enjoy real-time monitoring as long as the APP is on. In addition, with an average power consumption of only 1.5mA that it can be almost unnoticeable. So you don't have to worry about the BM300 draining your battery by being attached to it all the time (Application can monitor only one device at once)
- QUALITY WITH SAFETY FIRST: Built-in electrical overload circuit breaker with reverse polarity protection function ensures user safety during operation. The fire-resistant housing enhances high-temperature durability for added safety. In addition to these safety features, it also boasts exceptional alarm functionality. Which will notify you via the APP when the battery encounters malfunctions, abnormal voltage or power, alleviating your concerns in this regard
- HIGH ACCURACY: The copper construction on the connector ensures superior conductivity, while the built-in smart chip delivers readings with over 99.5% accuracy. Note: To ensure accurate results, please verify the correct internal and external conditions and temperature (above/below 0°C)
- WIDE APPLICATION: The bluetooth battery monitor compatibles with all 12V 100-2000CCA batteries, including regular flooding, AGM flat, AGM spiral, GEL and EFB batteries for cars, trucks, hybrids, suv's, boats, RV's, motorcycles, and even solar power systems. It can meet the needs of batteries of different models
- TRACK & MONITOR BATTERY PERFORMANCE: Use the “ Trip” function to observe the monitored output curve of each battery check and gain insight into usage patterns over the past 30 days. It records every instance of power consumption, giving you a comprehensive overview of battery performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07WCW49YM |
| Best Sellers Rank | #10,820 in Automotive ( See Top 100 in Automotive ) #18 in Battery Testers |
| Brand Name | ANCEL |
| Color | Black |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,233) |
| Included Components | Battery Monitor bluetooth |
| Item Dimensions | 4.33 x 0.98 x 5.12 inches |
| Manufacturer | ANCEL |
| Maximum Operating Voltage | 12 Volts |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 6 Volts |
| Model | BM300 |
| Power Source | Battery Powered |
| Specification Met | EN 61010-1 |
| Style Name | Battery Monitor |
| Upper Temperature Rating | 85 Degrees Celsius |
| Warranty Description | 1 year warranty |

## Product Details

- **Brand:** ANCEL
- **Color:** Black
- **Item dimensions L x W x H:** 4.33 x 0.98 x 5.12 inches
- **Power Source:** Battery Powered
- **Style:** Battery Monitor

## Images

![ANCEL BM300 12V Battery Monitor, Bluetooth 4.0 Automotive Voltmeter with Charging, Cranking System Test & Alarm - Compatible for Solar Power Systems, RVs, Motorcycles, Boats, Cars, and Trucks - Image 1](https://m.media-amazon.com/images/I/61rjrDtzapL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Is it possible to see how much power the battery has used ?**
A: ANCEL BM300 has a 30-day data historical record, which allows you to check how much electricity has been used through each record.

**Q: Can Android or iOS device directly monitor local data ?**
A: iOS devices can monitor directly, while Android devices require authorization.

**Q: What about the stability of Bluetooth connection ?**
A: Enable location access within a 33 ft range of the device, allowing continuous monitoring of battery data on your phone.

**Q: Can multiple batteries be monitored at the same time?**
A: No, BM300 can only monitor one battery, If you want to test another battery, delete the current one and test the battery data you want to test.

**Q: Is the voltage data accurate?**
A: The data with an accuracy of more than 99.5%, with intelligent calculations that make the data more accurate the longer you monitor it.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Effective and easy to install
*by D***D on April 4, 2026*

Easy to install. I've only used the corresponding phone app to monitor volts and state of charge. We're chasing an intermittent parasitic draw, so it's easy to check if the draw has been active or not. Instead of guessing and hoping that the battery has enough juice to perform a start, this device gives you actual data so you can make better decisions and get ahead of the problem.

### ⭐⭐⭐⭐⭐ A Very Good Charging system and Battery Analyzer.
*by R***R on March 2, 2026*

This is a great product. It does exactly what it says it will do. Packed with enough features for you to monitor your battery’s performance or lack of. The app is very user friendly, once you take the time to explore, you’ll realize how much information is at your fingertips. Even when you’re out of bluetooth range, the information is still being stored and waiting. I think I was able to go as far back as five days and view my battery’s performance data. Customer service is excellent. If you ever have any issues, they will go to the extreme to help you. Believe me. Now the Bluetooth signal maybe an issue for some but don’t ask for more than many other devices cannot offer either. Plus understand that the module is inside your engine bay (in most cases). Just get it. I would like to thank my Ford F150 Powerboost members who introduced me to this nifty piece of equipment. Because of how my truck’s hood comes down very close to my main battery, I have to keep it on the side.

### ⭐⭐⭐⭐ GOOD BUT NEEDS SOME IMPROVEMENTS
*by L***R on March 7, 2026*

I bought 2 of these. They are easy to set up with Bluetooth and works about 30 feet away. They give valuable information with respect to battery performance and even record in a nice graph to be retrieved later for examination in Excel charts. They can show State of Charge, Voltage and Temperature. That in itself is good enough for most users, but it can also evaluate starting and cranking performance. The problem comes with location-labeling and trip information. (See photo below). My cars are a RAV4 and a 08 Fit. When locating these cars using the App, the labels on the cars are reversed displaying the Honda where the RAV is and vice versa. This also occurs when using the GPS on trips. Another problem is displaying the trips. Sometimes mileage is shown, sometimes not. (See photo). Distances from the cars is also wrong. Photo shows distance as over 600 feet, when in reality, is 45 feet between the two vehicles. The battery display is about .3 volts higher than actual. If these errors were fixed I'd give it 5 stars... it is still a good device for battery health if that is what you need.

## Frequently Bought Together

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-18*