BAT-BMS 1.1.1

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.