Summary of Major Improvements

Significantly smaller enclosure size for 24-72 cell configurations.
Roughly 40% lower weight on all models due to the new enclosure design and streamlined (removable) heatsink. Minimum heat dissipation requirements apply.
Considerable boosts in measurement accuracy and processor speed allow for more advanced calculations and logic.
Direct hardware support for several popular charging protocols including hardware support for SAE J1772 (directly interfacing with the pilot / proximity lines) and CHAdeMO for DC fast charging.
Wider input power voltage range (now 12v-24vDC compatible) for better support on heavy vehicles and equipment. The Orion 2 BMS remains fully compatible with 12v applications.
Ability to directly drive certain contactors on select inputs (bypassing the need for intermediate signal relays in some situations)–see supporting documentation for details.
Completely redesigned multi-unit series configuration (now using Remote Cell Tap Expansion Modules). This greatly simplifies connecting multiple units together in series and improves the overall reliability.
New Status LED on the unit to indicate power status and the presence of faults.
Addition of 2x new Multi-Purpose Output pins with programmable functions.
Significant algorithm and software enhancements to improve overall system accuracy for parameters such as State of Charge and pack health.
See the complete Orion 2 Change Log document

Quick Specifications
Capable of measuring up to 180 battery cells per unit connected in series based on configuration.
Up to 2x Remote Cell Tap Expansion Modules can be connected to measure higher voltage battery packs (up to 800vDC max).
Configurations available in increments of 12 cells in series.
Centralized design provides high EMI and noise immunity.
Performs intelligent cell balancing (passive).
Calculates state of charge (SOC).
Uses professional automotive-grade locking connectors.
Calculates discharge current limit (DCL) and charge current limit (CCL).
Can measure cell voltages between 0.5v and 5.0v.
Dual (x2) CANBUS 2.0B interfaces which (fully programmable).
OBD2 diagnostic protocol support.
Software Downloads
Orion BMS 2 Software Utility (Windows) (Linux) (ZIP) (BETA) 

Note: This software requires a CANdapter to interface with a computer (PC). 
 

Documentation & Resources
Purchasing Guide (PDF)
Quick-Start Guide (PDF)
Technical Specifications Sheet (PDF) 
 

Wiring & Installation Manual (PDF)
Operation Manual (PDF) 
Software Utility Manual (HTML) 
Troubleshooting Guide (HTML) 
 

What’s New In Orion 2 (PDF)
Orion 1 To Orion 2 Migration Guide (PDF) 
 

Orion BMS 2 Software Utility (Windows) (Linux) (ZIP) (BETA) 

Note: This software requires a CANdapter to interface with a computer (PC). 
 

OBD2 PID List (PDF) (XLS)
Torque Extra PIDs/Sensors List (PDF) (CSV)
Wiring Diagram Generator Tool
Mechanical Drawing For 24-72 Cell Models (PDF)
Mechanical Drawing For 84-108 Cell Models (PDF)
Mechanical Drawing For 120-180 Cell Models (PDF)
Mechanical Models For All Models (3D STEP)