NOTES: 
1.  Before ordering your BMS, here's a great and easy to help confirm what size BMS is required for your application. For sizing an expandable unit, only include the number cells that the expandable unit will be monitoring.
2.   For the purposes of diagnostics and initial configuration of the unit, is required.
3.   12-foot cell tap harness available upon request
4.   Please see BMS return policy in our
5.  The 72S cell configuration has a minimum order quantity of 5 units.

Includes:

• Expandable BMS main unit
• 6-foot Cell tap harness  -- 12-foot harness available upon request
• I/O harness
• Current sensor / Remote / Thermistor harness including...
• 8 thermistors (for additional thermistors, add the )

The Expandable Orion BMS 2 can protect anywhere from 24 to 180 cells in battery systems with max voltages of up to 800V. Expandable Orion BMS 2 units may be used with up to two units for monitoring systems with battery packs split between multiple locations, or in systems with more than 180 cells in series. For smaller systems with 16 cells or fewer, consider using the .

Why choose the Remote/Expandable option?
The use of Expandable and Remote Orion BMS 2 units greatly improves safety and simplifies installation in vehicles with multiple battery boxes. They remove the need for routing thin gauge, high voltage wires throughout the vehicle, and allow you to fully wire the cell taps outside of the vehicle if desired. When combined with  you can install each BMS inside of a , and thus have no permanent high voltage connections leaving your battery boxes.  Additionally, since each unit can accommodate 8 thermistors (16 in total), in going this route you could potentially avoid the additional cost of an Orion Thermistor Expansion Module.   

The Orion implements an extensive list of features designed to protect the battery pack. These features include:

• State of charge calculations
• Cell over-voltage and under-voltage protection
• Intelligent battery balancing (passive)
• Battery charger control
• Pack temperature monitoring
• Monitors health of battery pack

Cells are protected from over-voltage, under-voltage, over-current, over-temperature, and under-temperature based on the programmed minimum and maximum values in the battery profile.

Intelligent, efficient cell-by-cell balancing is provided to maximize the usable range of the battery. The BMS also monitors the health of both individual cells and the total pack and will trigger error trouble codes if either the pack or individual cells are in poor health.

The Orion BMS 2 is the second generation of an already popular and successful product, and boasts quite a few significant , including a much lighter, smaller design, improved accuracy, additional inputs and hardware support for SAE J1772 charging protocol.