BM2

Name: BM2
Rating: 3.58 (1971 reviews)
Author: wanbaolu

By: wanbaolu

Battery Voltage Test,Cranking System Voltage Test,Charging System Voltage Test

Features & Capabilities

BM2 is a powerful Chrome extension designed for comprehensive car battery monitoring. It provides real-time voltage readings, historical voltage tracking, and automatic startup voltage testing. BM2 supports both idle and high-speed charging system tests, ensuring your vehicle's electrical system is performing optimally. All gathered data syncs seamlessly with your mobile device via Bluetooth for easy access and analysis.

Additionally, BM2 offers a dedicated Wear OS version that displays device and battery test data directly on wearable devices. With features that include battery test metrics, startup voltage status, and charging system performance, BM2 ensures you stay informed about your car battery's health wherever you go.

User Growth & Download Statistics

App

By:

wanbaolu

Downloads:

169,848 331

Rating:

3.58

(1,971) 1 new ratings

Version:

3.8.0 Last updated: 2025-10-30

Version code:

111

Creation date:

2016-05-25

Publisher country:

Permissions:

android.permission.ACCESS_BACKGROUND_LOCATION Very high risk
android.permission.ACCESS_COARSE_LOCATION Very high risk
android.permission.ACCESS_FINE_LOCATION Very high risk
android.permission.CAMERA Very high risk
android.permission.RECORD_AUDIO Very high risk
android.permission.MOUNT_UNMOUNT_FILESYSTEMS High risk
android.permission.READ_MEDIA_AUDIO High risk
android.permission.READ_MEDIA_IMAGES High risk
android.permission.READ_MEDIA_VIDEO High risk
android.permission.ACCESS_LOCATION_EXTRA_COMMANDS Moderate risk

Size:

22.05MB

Email:

wa*****@gmail.com

URLs:

Full description:

Source:

Google Play Store

Data ingested on:

2026-07-01

Compare stats and ranking:

Ranking

# 167,705 ▼ 183

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:

wanbaolu

Google Play Store

https://play.google.com/store/apps/details?id=com.dc.battery.monitor2

Email:

wa*****@gmail.com

User Reviews

BM2 is praised for easy installation, at-a-glance battery/charging data, and strong value across vehicles. Common concerns are limited lithium/AGM presets, unreliable auto-connect, inaccurate voltage-to-SOC readings, and occasional instability. Users want better auto-connection, accurate SOC readings, and true lithium support. Overall, it’s a handy, affordable monitor for many setups, but not ideal for lithium batteries or flawless reliability.

Pros

Easy to install and simple setup.
Shows battery, charging, and health data at a glance.
Great value / affordable price.
Reliable performance across a range of vehicles (cars, RV, EVs, bikes).
Allows monitoring without opening the vehicle doors (hands-off monitoring).

Cons

Limited presets for lithium/AGM batteries; lithium support is missing or hard to configure.
Auto-connect is unreliable and may not reconnect automatically when nearby.
Voltage-to-SOC percentage readings are often inaccurate.
Occasional instability: works well at times, but can stop functioning for some users.