14S 52V 20A BMS Continuous 18650 ebike Li-ion Battery

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51.8V lithium ion battery protective circuit, 14S 51.8V 20A BMS, with the balance function, Free balanced cable.

14M20A07

Feature

1. It is suitable for 14S 51.8V lithium ion battery pack.

2. With functions of protection from voltage, current detection, including over-current, overvoltage, under-voltage and short circuit protection, voltage balance function.

3. This BMS was build with high end electronic components (High End Integrated IC chip and MOSFET ) ,It has highly precision on detection on voltage and current .stable working performance in extremely condition.

Electrical Characteristic (Ta=25 ºC)

No.

Test Item

Min.

Typ.

Max

Unit

1

Input Charging Voltage

58.6

58.8

59.0

V

2

Input Charging Current

 

8

 

A

3

Output Discharging Current

 

20

 

A

4

Over-Current Discharging Protection

55

60

65

A

5

Current Consumption

10

15

25

uA

6

Balance Current

45

50

55

mA

7

Balance Voltage

4.16

4.18

4.20

V

8

Over-Charge Protection Voltage

4.21

4.25

4.3

V

9

Over-Charge Protection Voltage Release

4.0

4.15

4.2

V

10

Over-Charge Protection Voltage Delay Time

1.0

1.5

2.0

S

11

Over-Discharge Protection Voltage

2.42

2.5

2.58

V

12

Over-Discharge Protection Voltage Release

2.9

3.0

3.1

V

13

Over-Discharge Protection Voltage Delay Time

1.0

1.5

2.0

S

14

Short Circuit Protection Release

Remove the load

15

Impedance

 

8

15

16

Operating Temperature

-15

+25

+45

ºC

17

Storage Temperature

-20

+25

+30

ºC

 
 
14M20A0814M20A1114M20A14

Wiring instructions:

power cable

B-:Connect to battery negative  (Black cable 14AWG  L=150±5mm)

P-:Connect to negative of discharge port (Blue cable  14AWG  L=150±5mm) 

C-:Connect to negative of charge port (yellow cable  18AWG  L=150±5mm) 

 

Voltage monitoring cable

cable type:UL1007   22AWG   L=300±5mm
B-(Black),B14+(Red)
B-(GND)/B1/B2/B3/B4/B5/B6/B7/B8/B9/B10/B11/B12/B13/B14 (B+) 
 

Remarks:

Please connect B- line firstly, and then connect voltage monitoring wiring harness. The last step is to connect charge and discharge lines. If you want to remove them, the order should be reversed. Please pay attention to the connection order, or it will damage the component.

 

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