I’ve had great success using:
GitHub - fl4p/batmon-ha: Add-on for Home Assistant to connect JK, JBD and Daly BMS via Bluetooth
with my cheap Daly bluetooth BMS.
The BMS shuts off so it loses connectivity and needs a physical button push on the BMS to get it going again.
I just found it fun to get working and to remotely check on it from my single pane of glass.