Keep your expensive batteries in top condition and increase the lifespan with this modular battery management system for lithium battery packs. Directly accessible using your smartphone via Bluetooth.

Switch all your high currents or signals with this easy to use, dual relay. The extremely power efficient design ensures very long operation times even on very small battery capacities. Switch high powers with extremely little! 

Extension module for 123SmartBMS. Adds many functions like 4 configurable relays, dual CAN bus, multiple CAN chargers support and isolation detection. A truely “Swiss knife” to make any project possible.