Location: Hawthorne, CA 90250, USA


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BMS Satellite Module for VCU  

  • $304.65

The AEM Battery Management System (BMS-18) is comprised of three components: 

1.VCU (Vehicle Control Unit)

2.BMS-18 Master 

3.BMS-18 Satellite(s) 

The BMS is implemented as two different Module types: the BMS Master and the BMS Satellite. Each Module is capable of measuring up to 18 cells and 3 temperatures (thermistors) but the Master also contains the CAN communication interface and J1772 charging specific connections needed for each battery pack.  

The VCU communicates with the BMS via the Master Module and all battery packs need at least one Master unit. The Satellites expand the capability of the Master by an additional 18 cells and 3 thermistors per additional Satellite connected. The Satellite Modules are connected to their Master via a high-speed serial interface (isoSPI) that allows additional units to be daisy chained together, adding as many Satellites as necessary for the battery pack configuration. 

The VCU is responsible for all BMS control logic.  All setup and calibration items can be modified using the AEMCal user interface.

Emission Code5
Product TypeEV Controls
Part Number30-8401S

Emissions code 5. This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations. 

*Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Some parts are not legal for use in California or other states with similar regulations.

About AEM EV


The AEM EV mission is to make electronics products that simplify the EV conversion process. Our EV Vehicle Control Units and supporting electronics are intuitive and simple to use and provide powerful control for EV street-conversion vehicles and motorsports applications.


    • Weight
      0.8 lbs
    • SKU
  • Manufacturer
    AEM EV
  • New/Used
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We ship to the United States and Canada. Worldwide shipping and hazardous materials such as lithium batteries may require a separate estimate.

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