1. Specifications

The following specifications must be met to ensure a safe and optimal work with the foxBMS hardware.

1.1. Electrical Ratings Master Unit

Description Minimum Typical Maximum Unit
Supply Voltage DC 10 26 V
Contactor Continuous Current 4 A
Contactor Feedback Supply Voltage 5.0 V
Analog Input 3.3 V
Isolated Contacts Continuous Current 4 A
Interlock Circuit Sink Current 10 mA
Idle Supply Current at 12V supply 150 mA
Idle Supply Current at 24V supply 110 mA

1.2. Electrical Ratings 12-Cell Slave

Description Minimum Typical Maximum Unit
Battery Module Voltage 11 60 V
Single Battery Cell Voltage 0 5 V
Temperature Sensor Inputs 10k Ω
Analog Inputs (pin headers) 0 5 V
Digital Inputs/Outputs (pin headers) 0 5 V
External DC Supply (HW version 2.1.0 and above) 8 12 24 V

1.3. Electrical Ratings 18-Cell Slave

Description Minimum Typical Maximum Unit
Battery Module Voltage 16 90 V
Single Battery Cell Voltage 0 5 V
Temperature Sensor Inputs 10k Ω
Analog Inputs (pin headers) 0 5 V
Digital Inputs/Outputs (pin headers) 0 5 V
External DC Supply 8 12 24 V