Smart Batteries have their issues but being able to monitor them in Home Assistant is convenient and mostly works well. (Yes, another option is a smart shunt.)
Fortunately, as usual with Home Assistant, there is an awesome plug-in via HACS, the Home Assistant Community Store, for all these bluetooth BMSes via BMS_BLE-HA.
Once the batteries are showing in the BLE Management, you can then create a helper to combine the status of these. Now, granted, if these batteries are series and paralleled correctly their charge states should stay very close but this is helpful for a quick look. Also this could be set up to notify you if the voltages or charge states do drift.
Updated and Retried on Home Assistant 2025.11.3 12/03/25
Leave a Reply