EMUS G1 CAN Cell Group Modules (also known as CGMs) are advanced, microprocessor equipped cell communication adapters that allow the Control Unit to communicate with the Cell Modules over the CAN bus instead of directly. More than one of them can be used in a single battery pack, which allows to connect the Cell Modules into several small daisy chains instead of one long chain. This not only eliminates the drawbacks of the T op and Bottom Isolators, but also makes the EMUS G1 BMS capable to serve a virtually unlimited number of cells. Furthermore, it enables the EMUS G1 BMS to manage battery packs that consist of several strings of cells connected in parallel.


Each CAN Cell Group Module supports up to 80 cells in series (recommended ~40-60);
Galvanic isolation 1kV (cell communication serial interface);
Operating voltage: 6V – 64V;
Operating temp.: -40°C to +80°C;
Dimensions: 49 x 44 x 11 mm;
Wire length:
– Cell communication 0.5m;
– CAN bus 1m (with connector);
Mounting hole: M3.5

Large, high voltage, series connected battery packs. High capacity battery systems of multiple cell strings connected in parallel. Applications with high levels of electromagnetic noise.

Ordering Information:

Please use part numbers below for ordering the products

Part number Description Package Contents


G1 CAN Cell Group Module

CGM022C, CAN Cell Group Module – 1pcs
CNC03-100, CAN cable (100cm) – 1psc
CCC02, Cell connection cable (2-pin right sided) – 1psc
CCC03, Cell connection cable (3-pin left sided) – 1psc




G1 BMS User Manual 2.10

2023-11-13 11:19:54

Download Release Notes


G1 CAN Cell Group Module firmware 1.9

2021-03-30 10:00:05



G1 CAN Cell Group Module data sheet CGM022C

2021-03-30 09:53:34


3D Design Files:

CGM022 STEP File 1

2021-03-30 10:54:35


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