To use  the EMUS BMS with a charger without CAN-bus interface. 

Emus BMS Solid State Relay is an electronic switch, designed to toggle AC power to any basic charging device that does not feature current control capability, providing the main controller the means to limit the charging current.
AC connection sensing feature allows the main controller to acknowledge the presence of charging device, and to commence charging. A pair of LEDs provide indication of relay state and AC connection status

• Galvanic isolation 3.7kV
•     (AC Sence output);
• Operating voltages:
•     230 VAC on AC cables;
•     9 to 16 VDC on signal wires;
• Dimensions: 100x80x62 mm;
• Wire lenghts:
•     ACIN 1.5m; ACOUT 0.5m;
•     Signal cable 1.5m;
• Mounting holes: M5

The smallest, lightest weight, lowest cost sealed DC-contactor, power relay the industry.

• EV200AAANA 9V-36V coil system
• hold current @12V: 130mA
• hold current @24V:   70mA
• Load Current: 500A
• Operating Voltage: 900VDC
• Contact Configuration: SPST-NO

Tyco Kilovac EV200AANA DC Contactor datasheet.pdf

• EV200ADANA 32V-96V coil system
• hold current @48V: 30mA
• Load Current: 500A
• Operating Voltage: 900VDC
• Contact Configuration: SPST-NO

Tyco Kilovac EV200ADANA DC Contactor datasheet.pdf