7.4V lithium battery protection board PCBA
  • Air Pro7.4V lithium battery protection board PCBA
  • Air Pro7.4V lithium battery protection board PCBA

7.4V lithium battery protection board PCBA

1) Overcharge protection 2) Over discharge protection 3) Short circuit protection 4) Overcurrent protection

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Product Description

1. Technical parameters


Serial number

Test items

specification

unit

Remarks

1

Current

Permanent discharge current

2A~9A

A

 

 

 

Instantaneous discharge current

≦3uA

A

 

2

Voltage

Charging voltage

3.7

V

 

 

 

recharging current

2A-9A

A

 

3

Overcharge protection

Overcharge detection voltage

3.75±0.025

V

Single core

 

 

Overcharge protection delay

1

S

 

 

 

Overcharge recovery voltage

Hysteresis overcharge detection voltage 0.2

V

 

 

 

Overcharge release voltage

3.7±0.05V

V

Single core

4

Power balance

Cell balance detection voltage

/

V

 

 

 

Cell balance release voltage

/

V

 

 

 

Cell balancing current

/

mA

 

5

Over discharge protection

Overdischarge recovery voltage

2.0-2.1V

V

 

 

 

Over-discharge detection delay

0.1

S

 

6

Overcurrent protection

Overcurrent detection voltage

200±25

mV

 

 

 

Overcurrent detection delay

12

S

 

 

 

Overcurrent detection current

2-9

A

 

 

 

Overcurrent protection release conditions

Automatic recovery

 

 

7

Short circuit protection

Detection status

External short circuit

 

 

 

 

Detection delay time

300

mS

 

 

 

Recovery state

Automatic recovery

 

8

Temperature protection

Temperature protection

/

 

 

9

Internal resistance

Protection circuit (MOSPET)

≤20


 

10

Self-consumption

Working current

≤30

uA

 

 

 

Sleep current (when current is over-discharged)

≤20

uA

 

11

Operating temperature

temperature range

﹣40~+50℃

 

 

 

Operating and storage temperature range

﹣40~+50℃

 

12

Board size

 

90*45*0.68mm

mm



2. Four major protections

1) Overcharge protection

2) Over discharge protection

3) Short circuit protection

4) Overcurrent protection

3. Our advantage

1) Quality assurance, excellent materials, advanced equipment, strict quality system

2) Fast delivery, one-stop solution from customer information and requirements, reduces customer costs, and accelerates product launch.

3) It can be customized, and various PCBAs can be customized according to customer requirements.

4) Good service, one-to-one dedicated customer service, seamless connection throughout the process.

4. Custom instructions: Custom instructions:

As long as you tell us your functional requirements, our engineers will provide you with design, development and production solutions. We can design into any shape and size. We have completed tens of thousands of customizations, and we know how to design and produce electronic products that require professionalism and consistency. Our production is fully automatic production line, which can provide you with products with stable quality and consistent performance. Establishing long-term cooperative relations is conducive to maintaining stable product quality and follow-up technical services.

Our company mainly does customization and there are no ready-made ones. The pictures on the Internet are some samples that we have ordered and produced for our customers.


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