---
product_id: 787919057
title: "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: "VT35414"
currency: VUV
in_stock: true
reviews_count: 5
category: "Ancel"
url: https://www.desertcart.vu/products/787919057-bm300-12v-battery-monitor-bluetooth-4-0-automotive-voltmeter-charging
store_origin: VU
region: Vanuatu
---

# 99.5% voltage accuracy Bluetooth 4.0 wireless range 33ft 12V battery compatibility 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:** VT35414
**Availability:** ✅ In Stock

## Summary

> 🔋 Stay charged, stay ahead — never get caught powerless again!

## Quick Answers

- **What is this?** 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?** VT35414 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/787919057-bm300-12v-battery-monitor-bluetooth-4-0-automotive-voltmeter-charging)

## 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

- • **Ultra-Low Power Drain:** Consumes just 1.5mA, so it stays attached without draining your battery.
- • **Real-Time Battery Insights:** Monitor voltage, cranking, and charging system health instantly via your smartphone app.
- • **Advanced Safety Protections:** Built-in overload breaker, reverse polarity protection, and fire-resistant housing keep you and your battery safe.
- • **Comprehensive Usage Tracking:** Analyze 30 days of battery performance and travel history to optimize your vehicle’s power management.
- • **Seamless Bluetooth Connectivity:** Stay connected up to 33 feet away—no more guessing battery status from outside the vehicle.

## Overview

The ANCEL BM300 is a compact, Bluetooth-enabled 12V battery monitor designed for cars, RVs, boats, motorcycles, and solar systems. It delivers ultra-accurate voltage readings with 99.5% precision, real-time alerts, and detailed 30-day usage tracking via a free smartphone app. Featuring advanced safety protections and ultra-low power consumption, it ensures your battery stays in peak condition while you stay effortlessly connected up to 33 feet away.

## Description

Battery Monitor BM300 Main Features: 1.Receive notification of battery conditions when enter BLE range; 2.Check starting system and charging system (alternator); 3.List the time of each driving; 4.Alert mobile phone if some data abnormal; 5.Review voltage history in graph mode; 6.Short-circuit and reverse connection protection; 7.Data stored in device up to 30 days if out of sync; 8.Ultra-low power consumption, average current: 1.0 mA; 9.Connect with battery directly, no code; 10.Free app for iOS & Android users; 11.Compatible with all 12-volt vehicle batteries; Voltage: 9-16V; 12.Temp: -40-85C. Battery Monitor BM300 Principle: Check battery state on phone APP via Bluetooth 4.0 when device is installed; Use for: All 12V Vehicle Battery; APP Name: Battery Monitor; Available: Android: 4.3 and later; iPhone: 4S and later; iPad: iPad3 and later; Suitable for: *DIY users; *Battery service station; *Garage/workshop; *Tool store; *Vehicle/Battery manufacturer. NOTE: Alert users if charge is low; Review charge history in graph mode; Show the state of charge of battery in real time; Near-Filed Perception to get notification automatically.

Review: Is een gemakkelijke manier om de status van je startaccu te controleren.
Review: installed in about 5 minutes - bluetooth connected 1st time really easy and there it was the voltage of my leisure battery handy for when all the kids are using my battery to charge all there phones - it enables you to not damage the battery and run it too low - ok so it has a crank setting which i have no need for on a leisure battery but you can set it to notify you when battery gets low which for me after destroying two AGM batteries because we used to run them flat as i had no way of telling pre my solar kit is fantastic - good but of kit for not a lot of money. IF YOU HAVE A CAMPER THIS IS SOMETHING YOU NEED

## 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 |
| Item model number | BM300 |
| Manufacturer | ANCEL |
| Product Dimensions | 11 x 2.5 x 13 cm; 68 g |

## Product Details

- **Brand:** ANCEL
- **Colour:** Black
- **Item dimensions L x W x H:** 11 x 2.5 x 13 centimeters
- **Power source:** Battery Powered
- **Style:** Battery Monitor

## Images

![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

### ⭐⭐⭐⭐⭐ Review
*by S***A on 1 December 2025*

Is een gemakkelijke manier om de status van je startaccu te controleren.

### ⭐⭐⭐⭐⭐ Review
*by D***P on 31 May 2024*

installed in about 5 minutes - bluetooth connected 1st time really easy and there it was the voltage of my leisure battery handy for when all the kids are using my battery to charge all there phones - it enables you to not damage the battery and run it too low - ok so it has a crank setting which i have no need for on a leisure battery but you can set it to notify you when battery gets low which for me after destroying two AGM batteries because we used to run them flat as i had no way of telling pre my solar kit is fantastic - good but of kit for not a lot of money. IF YOU HAVE A CAMPER THIS IS SOMETHING YOU NEED

### ⭐⭐⭐⭐⭐ Review
*by M***E on 9 May 2025*

Muy útil. Tengo una autocaravana y se lo he colocado a la batería auxiliar para el habitáculo. Ofrece una gran cantidad de datos y fiables, por lo que da mucha tranquilidad, sobre todo los cortos días de invierno en los que anochece muy pronto y durante el día la carga de la batería deja mucho que desear. Saber en todo momento en la situación de la batería Yo lo he colocado en la parte superior de la batería con una cinta de pegar doble cara y listo..

## Frequently Bought Together

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-03-18*