3.6
1.93K reviews
100K+
Downloads
Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

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.
Updated on
Oct 30, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Device or other IDs
This app may collect these data types
Location, Photos and videos, and Device or other IDs
Data isn’t encrypted
Data can’t be deleted

Ratings and reviews

3.7
1.84K reviews
A Google user
August 24, 2019
This needs a function to export data, which is very helpful when getting warranty replacement on a weak battery. Also, if you have multiple sensors, the app keeps changing to the sensor with the strongest bluetooth signal. It needs to stay on the chosen device until the user changes it. It would also be handy to have a quick device selection on the main screen, rather than having to go into settings to switch devices every time.
43 people found this review helpful
Did you find this helpful?
Erik Wehn
November 7, 2020
I'm happy with the Bluetooth range (~30ft), the information presented, the UI, etc. This monitor and app have been great for my travel trailer. I do recommend the device and app. Minus 2 stars because the app has to be manually forced closed. That's become pretty annoying! Fix that and allow export of the log data to excel and this would be a six star setup.
29 people found this review helpful
Did you find this helpful?
Charles H. Rogers III
May 19, 2022
You're missing out if you don't have this device and app for car audio enthusiasts! It would be nice to be able to switch batteries in the app instead of doing into settings to switch. I run 2 AGM batteries and I would like to be able to see both. I do have a device on each battery. They are labeled front and back, but I can't switch easily. They should both be displayed if you have more than 1 device. Awesome work!
12 people found this review helpful
Did you find this helpful?

What’s new

1. Compatible with Android 15
2. Optimized related details