The Daly Y Series Smart BMS is a versatile battery management system designed for Li-ion battery packs from 7S to 24S.

Unlike a fixed-series BMS, the Y Series automatically detects the connected battery series count when the BMS is activated, allowing the same unit to be used across a range of pack configurations.

Built-in Bluetooth provides battery monitoring through the Daly smart app, while RS485 communication provides additional connectivity options. The Y Series also includes automatic cell balancing and smart series-count detection.

Marsen stocks the 7S–24S version in two current ratings:

30A – YH Series
120A – YK Series

Select the current rating appropriate for the battery pack and application.