Xiaoxiang BMS is a powerful iOS app developed by e77code GmbH that allows users to build simple Li-Ion or LiFePo4 battery packs for various purposes such as camping, cars, solar, or e-bikes. With this app, users can monitor the voltage of the cells, total capacity, charging/discharging current, and alarm temperatures on their iPhone or Apple Watch.

One of the standout features of Xiaoxiang BMS is the ability to switch the battery output on and off, providing users with control over the charging and discharging ports. The app also offers notifications support on both the iPhone and Apple Watch, ensuring that users stay updated on their battery pack's performance.

In addition to monitoring and control features, Xiaoxiang BMS offers several useful functionalities. Users can change the Bluetooth advertised name, unlock hardware-protected BMS for firmware versions above v20, save and restore BMS configurations, and set a PIN code for BMS and config access (exclusive to iOS). The app also allows users to calibrate cell voltage and charging/discharging current, enable and configure the balancer, change BMS capacity settings, and monitor temperature, cell voltages, current, power, and BMS alarms.

With support for multiple languages including English, German, Polish, Chinese, French, and Spanish, Xiaoxiang BMS caters to a wide range of users. It also offers simple logging of max voltage, current, and power, as well as the ability to show basic data on the Apple Watch.

For any missing features or problems encountered while using the app, users can conveniently submit an issue on the GitHub page dedicated to Xiaoxiang BMS.

Please note that the app is not developed by the battery management system (BMS) manufacturer. For any questions or purchase inquiries, users are advised to contact one of the manufacturers listed on the Lithium Battery PCB website.