Battery Voltage Test,Cranking System Voltage Test,Charging System Voltage Test
About BM2
BM2 is a tools app developed by wanbaolu.
Download Statistics
BM2 has been downloaded 170 thousand times. In the last 30 days, the app was downloaded 1.4 thousand times.
User Ratings
BM2 is rated 3.56 out of 5 stars. The rating is based on 1.9 thousand ratings.
App Information
BM2 is FREE to download. The APK download size is 22.05 MB. The latest version available is 3.8.0. The last update was on October 30, 2025.
Technical Requirements
BM2 requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play May 2016.
Description
Battery Monitor BLE is an application for car battery monitoring, which can monitor the real-time voltage of the car battery; count the historical voltage of the battery; it can automatically test the
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Does the job but a couple of things I find is it does not automatically connect when close by and the battery levels are a bit off, saying low when it's actually at a good voltage. It's been on my car for quite some time and not caused any issues. Definitely handy but would be better if auto connect was better.
★★★★★4008 N Molter· Mar 17, 2026
Easy to install. Charging and battery information at my fingertips. Excellent price. Cant imagine needing anything else to monitor the health of my batteries and charging systems. Installed on my Ram 3500 diesel and my Kia EV6. Could not be more pleased.
★★★★★michael muchard· Apr 24, 2025
I've been using this device for several years on all of my auto, tractor, RV and RV toad batteries. It works great. Not only does it show the battery state-of-charge, it also shows the battery performance during starting which is a good indication the battery's remaining life. I found it so useful for monitoring my motor home's toad's battery while towing that I bought devices for my friends as a gift.
★☆☆☆☆bob haz· Apr 17, 2026
Why?\n Do you need access to all my phone data I don't want you monitoring where I'm at all times how fast I'm driving. Where all stops, I make Where I live when I'm home, when I'm not home. Somebody stares at me with binoculars. Reporting back to a third party is not acceptable. You peeping Tom, you. How is this acceptable? Peeping, Tom is against I just wanted to know what the level My battery was on my car. Now, your software has made the battery monitoring device undesirable
★☆☆☆☆AI AIN· Jul 31, 2025
App's voltage to percentage value is off by 30 percent. It shows my voltage as 12.23 volts as 38 percent. Look at any 12 volts car battery chart on the web, 12.2x volts is 60 percent.
★☆☆☆☆Ronald Erlston· Apr 23, 2025
Microsoft Defender has flagged this app on my Samsung phones as malware! Disappointing as the app was quite useful. Will only reinstall if cleared by Defender 😕
★☆☆☆☆Graeme Woods· Apr 4, 2024
Doesn't appear to work with lithium as box says it does. It also wants your exact location, or it doesn't work. Why does a battery monitoring system want your precise location at all times.? I will be returning it tomorrow for refund.
Google Play Rankings for BM2
This app is not ranked
Technologies used by BM2
BM2 is requesting 28 permissions and is using 36 libraries.
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Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
