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Information on using the Chevy Volt / Opel Ampera Battery BMS

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AmperaBattery

Information on using the Gen 1 (2011-2015) Chevy Volt / Opel Ampera Battery BMS

Original Contributors:

Tom de Bree, Damian Maguire

Further contributions by:

  • Liam O'Brien
  • swoozle (diyelectriccar.com)
  • jontscott (diyelectriccar.com)

Forum Threads

Software Requirements

Arduino Libraries

https://github.com/pedvide/ADC https://github.com/collin80/FlexCAN_Library https://github.com/JonHub/Filters

Communications with the BECM (Battery Energy Control Module) 500kbps CAN bus

Connector X1 on the BECM K16

  • 1 - Black - Ground
  • 2 - Red - 12V
  • 3 - White/Black - CAN_Low
  • 4 - Light Blue - CAN_High
  • 9 - Black - Ground
  • 14 - Brown/Red - 12V
  • 15 - Orange/Yellow - 12V
  • 16 - Light Green/Light Blue - 12V

This pin arrangement sets the Accessory Wake-Up Serial and Communication Enable lines high, and causes the same data you would see on the cars can bus to be spit out onto CAN lines 3 and 4.

Communications with the module slave boards

via the 125kbps Internal Network CAN bus

Connector X2 on the BECM K16 (see volt-pack-hookup.jpg) Pin numbering marked on the connector shell

  • 9 = 5V
  • 10 = Ground
  • 11 = CAN_Low
  • 12 = CAN_High

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Information on using the Chevy Volt / Opel Ampera Battery BMS

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