BM2

wanbaolu

About this app

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 battery startup voltage, and support idle and high-speed charging tests. All data is synced to the mobile app via Bluetooth.

And provides a Wear OS version, with functions including: displaying device data, battery test data, startup test data and charging test data on the Wear side through communication with the mobile phone BM2.

Ratings and reviews

I have two of these, one on my travel trailer and one on my truck camper. They are great for monitoring overall battery health and letting me know when my solar charging is working. Are they the most technically accurate? Probably not, but for my needs, they were working great. I say WERE working because since the Android 10 update, the app no longer connects to the devices. I was just on a week long camping trip and missed the functionality I paid for with the hardware. I hope this gets updated ASAP.

It WAS great. Bought it. Installed it. Connected it. No problems, worked great. I just got a new Android ( version 10) and it will NOT connect. My phone is discoverable, Bluetooth is on. Still will NOT connect. I Uninstalled and reinstalled the app. It still won't work. I really liked it when it did work. Anyone out there that can help?

Very accurate measure of current (pun intended) voltage across battery terminals; works while off, idle, running perfectly. Good for keeping tabs on battery while vehicle is laid up for few days during winter etc. Have cross checked the reading with a direct multi-meter and confirm it is usually within ~0.02v. Improvements; I'd suggest having main screen work in landscape mode also, a feature to toggle screen stay on, an maybe ability to scale the voltage axis on screen to more precise values.

What's new

1.Fix known issues and security updates