BAT-BMS 1.1.1

Shenzhen Grenergy Technology Co.,Ltd. ❘ Freeware ❘
Android iOS Windows Mac Linux
out of 11 votes

Latest Version
1.1.1 Safe to install

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BAT-BMS: Bluetooth battery monitor with serious access control problems

Human-built. AI-enhanced.

Minh Ong

10/30/2026

BAT-BMS shows state of charge, voltage, current, temperature and cycle life for compatible Smart Bluetooth lithium batteries within 15 meters, but it has no owner verification, so anyone nearby can connect and switch a battery off, and a recent update added a charge/discharge password with no way to set it.

This application is designed exclusively for Smart Bluetooth lithium batteries.

No need for a separate battery monitor
Wirelessly connect to each battery from your phone
Track Cycle Life on each battery
Display SOC, voltage, charge and discharge current, cycle life, cell voltage, and temperature
The phone needs Bluetooth 5.0 with Bluetooth Low Energy functions
Operating distance: less than or equal to 15 meters
The application can connect multiple batteries simultaneously, allowing you to view the data of another battery by switching between left and right pages
If you wish to connect the battery to another mobile phone, please close the app on the first mobile phone

BAT-BMS is a free Bluetooth battery monitoring app developed by Shenzhen Grenergy Technology Co., Ltd. It's designed for Smart Bluetooth lithium batteries, letting you check charge level, voltage, current, individual cell voltage, temperature, and cycle life directly from your phone — no separate battery monitor required. **Typical use cases:** solar setups, marine batteries, off-grid energy storage, golf carts, and other lithium battery packs using compatible Grenergy-based BMS hardware. ## Availability Note BAT-BMS was originally available on both the Apple App Store and Google Play. As of early July 2026, the app has been removed from Apple's App Store following media coverage of a security issue (see below); it remains available on Google Play. UpdateStar's listing will be updated to reflect current platform availability. ## Security Advisory In late June/early July 2026, BAT-BMS drew widespread media attention after viral videos showed people using it to remotely disable the battery output of e-rickshaws in India via Bluetooth. Investigation by tech outlets clarified that this is not a flaw in the app itself, but a configuration issue: many low-cost e-rickshaw battery packs use Bluetooth-enabled BMS hardware that dealers leave unsecured, with no password set. Any compatible app — including BAT-BMS — can connect to an unsecured unit within Bluetooth range and trigger its discharge cut-off. Vehicles using lead-acid batteries (no Bluetooth) or proprietary, password-protected BMS systems are unaffected. Users pairing BAT-BMS with their own batteries should ensure their BMS hardware has authentication/password protection enabled, per the manufacturer's instructions.

Overview

BAT-BMS is a Freeware software in the category System Utilities developed by Shenzhen Grenergy Technology Co.,Ltd..

The latest version of BAT-BMS is 1.1.1, released on 06/05/2024. It was initially added to our database on 06/05/2024.

BAT-BMS runs on the following operating systems: Android/iOS/Windows/Mac/Linux.

Users of BAT-BMS gave it a rating of 3 out of 5 stars.

Pros

Advanced battery management system designed specifically for lithium batteries, ensuring efficient and safe charging and discharging.
Real-time monitoring of battery status, including voltage, temperature, and current, allowing for precise control and optimization of battery performance.
Supports various communication protocols such as CAN bus and RS485, enabling seamless integration with other systems and devices.
User-friendly interface with easy-to-use software for setting parameters and customizing alerts and notifications.
Reliable overcharge and over-discharge protection, prolonging the lifespan of the batteries and ensuring long-term performance.
Provides historical data logging and analysis tools for tracking battery performance and identifying trends over time.

Cons

The initial setup may require technical expertise to ensure proper configuration of the system for optimal performance.
The cost of the BAT-BMS system may be relatively high compared to other conventional battery management solutions on the market.
Compatibility with certain types of lithium batteries or specific applications may be limited, requiring additional customization or compatibility testing.

FAQ

What is BAT-BMS and what does the app do?

BAT-BMS is a Bluetooth mobile app from Shenzhen Grenergy to monitor batteries using the battery's built-in Bluetooth transmitter. It displays real-time battery info such as state of charge (SOC), pack voltage, charge/discharge current, cell voltages, temperatures, and cycle life.

Which devices and Bluetooth version are required?

The app requires a smartphone or tablet with Bluetooth 5.0 that supports Bluetooth Low Energy (BLE). Android and iOS versions of the app are available on Google Play and the App Store.

How far can I be from the battery and still use the app?

Typical operating distance is up to 15 meters (about 50 feet) in open space. Range may be reduced by walls, interference, or the device’s Bluetooth antenna.

Can the app monitor multiple batteries at once?

Yes. The app can connect to multiple batteries and you can view another battery’s data by switching between left and right pages in the app interface.

What battery data does the app show?

The app displays SOC, pack voltage, charge and discharge current, individual cell voltages, temperatures, and cycle life. Some batteries also allow switching charge/discharge circuits on or off and have an advanced mode for parameter changes.

What should I do if the app won’t connect or crashes?

Troubleshooting steps: 1) Ensure your phone’s Bluetooth is on and Android/iOS permissions are granted. 2) Move closer to the battery (within 15 m). 3) Fully quit the app on any other phone that may be connected. 4) Restart your phone, then reopen the app. 5) Reinstall the app if needed. If problems persist, contact support (see below). Some users report intermittent issues while the developer optimizes the app.

Does the app collect or share my data?

No user data is collected and no data is shared with third parties. Privacy and data practices may be updated by the developer; see the app’s privacy policy link in the store listing for current details.

Where can I get support or report bugs?

Support email addresses listed by the developer include [email protected] and [email protected]; another contact is [email protected]. You can also refer to the BAT-BMS support pages on the developer site linked in the app listing.

Are there advanced settings or configuration options in the app?

Yes. The app includes an advanced mode that allows changing certain battery parameters. Use caution when changing settings — incorrect parameters could affect battery performance or safety.

How do I update the app and firmware for my battery?

Install app updates from the Apple App Store or Google Play as they become available. Firmware update methods vary by battery model; check the support documentation on the developer website or contact developer support for firmware upgrade instructions for your specific battery model.

Minh Ong

I'm Minh, a software engineer and author with a passion for exploring and writing about the latest in software and technology. With my experience in software development and a specialization in software updates and content creation, I bring a deep understanding of the tech landscape to my reviews and articles. My focus is on providing you with comprehensive insights into general software topics and the latest industry news.

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