SombreroBMS is a battery management system board and software for small electric vehicles and conversions. Mainly 36V and 48V battery packs. Currently in development.
- Lithium phosphate battery packs.
- Protection relay to connect to a power relays like a Gigavac 250A.
- State of charge updated by a current sensor during the discharge.
- Custom gauge connected with one wire + Gnd serial communication.
- Monitoring from a portable computer using a serial communication over USB.
- Passive balancing (possibility for a heavy duty version for first balancing use).
- Undervoltage events count per battery + worst value recording.
- Powered from the battery pack.
- 10 to 18 batteries.
You can follow the development at www.sombrerobms.com