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Monitor multiple Bluetooth-enabled battery management systems from your iPhone. View detailed pack voltage, cell voltages, current, power, state of charge, and temperature. Build custom battery groups and visualize charging activity.
✓Connect to multiple BMS devices
✓Detailed pack and cell diagnostics
✓Build custom parallel/series battery groups
✓Visualize charging and discharging
✓Apple Watch companion preview
✓Supports JiKong and JBD/Xiaoxiang hardware
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What's New in MultiBMS
1.0.8
August 6, 2026
This update focuses on real-world battery monitoring, Apple Watch reliability, and multi-pack systems. • Apple Watch now opens as a battery monitor first, with ride screens available when you want them. • Watch telemetry uses live iPhone-connected BMS/group data instead of placeholder values. • Improved group charging/discharging math for mixed pack states using net current and power. • Added ANT BMS connection improvements, including support for custom device names and multiple ANT units. • Added RX heartbeat diagnostics so testers can see whether live packets are arriving. • Added support groundwork and compatibility notes for Victron RV Bluetooth requests where available public protocol access permits it. • Fixed build/export metadata so the iPhone and Watch companion use the same build number. • Added no non-exempt encryption metadata so App Store Connect should no longer ask the encryption question every upload. • Improved Bus Life skin work and safeguards for one-pack and larger multi-pack layouts. • General Bluetooth, Watch sync, Skin Store, and stability cleanup.
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FAQ
What is MultiBMS?
MultiBMS is a utility app that connects to Bluetooth-enabled battery management systems (BMS) to provide a unified view of your battery data. It allows you to monitor pack voltage, cell voltages, current, power, state of charge, and temperature for multiple batteries simultaneously.
Does MultiBMS have ads?
No, MultiBMS does not contain any advertising. The app is designed to provide a clean and uninterrupted user experience for monitoring your battery systems.
What hardware does MultiBMS support?
MultiBMS includes support for multiple common BMS protocols, with JiKong and JBD/Xiaoxiang hardware being directly tested. Other protocols are marked BETA as verification is ongoing.
Can I group batteries with MultiBMS?
Yes, you can build custom parallel or series battery groups within MultiBMS. Group dashboards combine data from individual packs into a clear bank-level view while retaining access to each battery's details.
Is MultiBMS available on Apple Watch?
MultiBMS includes an Apple Watch companion preview that demonstrates features like Fleet, Cells, alert thresholds, and Race Mode. Live iPhone-to-Watch BMS synchronization is planned for a future update.
How much does MultiBMS cost?
MultiBMS is a paid application, priced at $0.99. This one-time purchase grants access to all current and future features without additional costs or subscriptions.
How often is MultiBMS updated?
The latest version of MultiBMS is 1.0.3, last updated on July 25, 2026. The app is actively developed with user feedback incorporated, suggesting regular updates to improve functionality and add features.
What is the age rating for MultiBMS?
MultiBMS has an age rating of 4+. This indicates that the content is generally suitable for all ages, with minimal or no objectionable content.