We ship your order rapidly. Coronavirus is causing delays at courier companies however and your item may take three times longer. Please have patience.

7S 24V 20A Lithium Polymer Li-ion Battery BMS Balance Function UK Seller/Stock

UK Stock, UK seller for rapid delivery. Check out sellers shop for a variety of other DIY electrical and battery essentials

DISCLAIMER: This item is a sophisticated electronic controller. You will need skill and knowledge to install it and use it. You will need to have done research, some available on YouTube - search "eBike School" and "Jehu Garcia" by example to find out what a bms is, what it does and especially how to install it. Wiring diagrams and how to use the bms are found on this listing. It will not be possible to return this item once opened and used, but most especially due to use or damge caused by negligence or lack of knowledge.

7S 24V 20A BMS

This bms is for a Lithium-ion battery. Not suitable for a LiFePO4 battery

Specifications

  • Brand Name: ANN
  • Size: L70*W51.5*T11mm
  • Nominal Capacity: 5-30Ah
  • Model Number: 7M20A01
  • Voltage: 24V
  • Weight: 0.08KG
  • Type: Li-ion battery BMS
  • Application: 7S 24V 5-30Ah battery
  • Product name: 7S 24V 20A li-ion BMS
  • Rated Voltage: 24V/25.9V
  • Charging voltage: 29.4V
  • Continuous working current: 20A
  • Over-Current Discharging Protection: 60A
  • Maximum charging current: 8A
  • Balanced Current: 50mA
  • Charge and discharge: Different charge and discharge port
  • Dimensions: L70*W51.5*T11mm

Features:

1. It is suitable for 7S 24V 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.

7M20A067M20A027M20A047M20A087M20A057M20A07

Wiring instructions:

power wiring harness

B-:Connect to battery negative  (3135 Black  14AWG  L=150±5mm)

P-:Connect to negative of discharge port (3135 Blue  14AWG  L=150±5mm) 

C-:Connect to negative of charge port (3135 yellow  18AWG  L=150±5mm) 

 

Voltage monitoring wiring harness

Line type:UL1007   22AWG   L=300±5mm
B-(Black),B7+(Red)
B-(GND)/B1/B2/B3/B4/B5/B6/B7(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.

 

Electrical Characteristic (Ta=25 ºC)

No.

Test Item

Min.

Typ.

Max

Unit

1

Input Charging Voltage

 

29.4V

 

V

2

Input Charging Current

 

8

 

A

3

Output Discharging Current

 

20

22

A

4

Over-Current Discharging Protection

50

60

70

A

5

Current Consumption

 

25

32

uA

6

Balance Current

45

50

55

mA

7

Balance Voltage

4.16

4.18

4.20

V

8

Over-Charge Protection Voltage

4.17

4.2

4.25

V

9

Over-Charge Protection Voltage Delay Time

1.0

1.5

2.0

S

10

Over-Discharge Protection Voltage

2.67

2.75

2.83

V

11

Over-Discharge Protection Voltage Delay Time

1.0

1.5

2.0

mS

12

Short Circuit Protection Release

Remove the load

13

Impedance

 

7

12

14

Operating Temperature

-20

+25

+50

ºC

15

Storage Temperature

-20

+25

+45

ºC

 
7M20A01

Subscribe