1. Specifications

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

1.1. BMS-Master

1.1.1. Electrical Ratings

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

1.1.2. Mechanical Dimensions (BMS-Master PCB only)

Description

Value

Unit

Width

120

mm

Length

160

mm

Height

15

mm

Weight

122

g

1.2. BMS-Slave 12-Cell

1.2.1. Electrical Ratings

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

1.2.2. Mechanical Dimensions (PCB only)

Description

Value

Unit

Width

100

mm

Length

160

mm

Height

15

mm

Weight

83

g

1.3. BMS-Slave 18-Cell

1.3.1. Electrical Ratings

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

1.3.2. Mechanical Dimensions (PCB only)

Description

Value

Unit

Width

100

mm

Length

160

mm

Height

15

mm

Weight

88

g