Orion BMS Jr. 02 (CAN)

• Orion BMS Jr. 02 (CAN) – Intelligent Battery Management, Scaled for Precision

  Modular. Reliable. Built for Builders.

  The Orion BMS Jr. 02 (CAN) is a compact, professional-grade Battery Management System designed for low- to mid-voltage lithium-ion packs. Engineered with the same robust architecture as its full-sized counterpart, the Orion BMS Jr. brings advanced cell monitoring, passive balancing, thermal management, and system protection into a streamlined and cost-effective form factor.

  Whether you're building an electric motorcycle, battery backup system, industrial robot, or compact EV, the Orion Jr. 02 offers trusted safety and control with CAN communication support.

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  🔋 Key Features & Specs:

  • Voltage Range: Supports packs from 12V up to 180V nominal

  • Cell Count Range: Up to 48 cells in series (60V-180V systems)

  • CAN 2.0B Interface – Compatible with Orion displays, chargers, inverters, and other CAN-capable devices

  • Built-in Passive Balancing – Up to 200mA per cell

  • Multiple Thermistor Inputs – Precise thermal protection and cell temp monitoring

  • Compact Enclosure (IP-rated) – Designed for tight-space integrations

  • Programmable Protections – Over/under voltage, temp limits, fault response, and SOC calibration

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  ⚙️ Available Variants:

  All variants include the core BMS controller and CAN communication. Choose based on your pack configuration and integration needs:

  🔹 Orion BMS Jr. 02 - 24 Cell Version

  • Supports up to 24 cells in series

  • Ideal for compact EVs, e-bikes, and portable energy systems

  • Lower cost entry point with full Orion BMS functionality

  🔹 Orion BMS Jr. 02 - 36 Cell Version

  • Supports up to 36S configurations

  • Great for mid-voltage platforms, such as solar storage and light EV builds

  • Increased monitoring range with CAN-based expansion compatibility

  🔹 Orion BMS Jr. 02 - 48 Cell Version

  • Full voltage support for up to 180V nominal systems

  • Best for higher voltage EVs, marine, and mobile energy systems

  • Offers maximum scalability within the Jr. family

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  🛠️ System Integrations & Use Cases:

  • EV Conversions & Electric Motorcycles

  • Off-Grid Solar & ESS Battery Management

  • Mobile Power Systems & Industrial Automation

  • Robotics, Marine, and Research Platforms

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  ⚡ Why Choose Orion BMS Jr. from EVSource?

  At EVSource.com, we offer factory-new Orion BMS units with direct technical support and system integration guidance. With a proven reputation for stability, protection, and configurability, the Orion Jr. 02 is the go-to solution for engineers and builders who need smart battery control without bulk.

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  ✅ Optional Accessories (Sold Separately):

  • Orion BMS Display Module – Live data, SOC, and fault display

  • Thermistor Kits – Ensure safe pack temperatures across all cells

  • Current Sensors (50A to 500A) – Accurate coulomb counting and current limiting

  • CAN Expansion Harnesses – For charger, inverter, or controller integration

  • USB Programming Cable – Access to full configuration suite via PC

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  🔧 Need a Complete System Build?
  EVSource offers custom wiring, contactor kits, battery enclosures, and tuning services. Contact us for bundle options and engineering consultation.

Specifications

Supports from 1 to 16 cells in series
Designed for Lithium Ion battery packs up to 48V nominal (60V max)
Calculates state of charge (SOC).
Calculates discharge current limit (DCL) and charge current limit (CCL).
Optional CANBUS 2.0B interface (fully programmable).
OBD2 diagnostic protocol support.

Wiring Manual
Operational Manual 
Purchasing Guide
What's New in the Orion BMS Jr. 02
Specifications 
Mechanical Drawing 
Quickstart

The Orion BMS also has some very useful add on accesories that can save you time and money while programming or in the field:

•SOC Display with Data Logging -- Connects to the BMS via CAN providing parameters to a memory card at a user designated frequency from 100mS to 10 seconds
•Cell Wiring Validator -- Checks the cell tap wiring harnesses to ensure they are wired properly before plugging them into the system. 
•Thermistor Expansion Module -- Allows up to 80 additional thermistors to the system via CAN. If needed, up to 10 Thermistor Expansion Modules can be used together allowing up to 800 thermistors to be used in a system. 
•Orion BMS Connect -- An internet based remote monitoring system that allows the user to monitor battery packs via PC/MAC, smartphone, or tablet. It provides instant data, charts of recent history, and diagnostic information including recent events, fault codes, and freeze frame data all on a webpage!