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48V Li Ion battery PCB board with 20A constant current and 5V USB output Module for 13S Li ion Battery of electric bike

US $7.30 - 25.90

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Item specifics

  • Accessory Type: Battery Accessories
  • Model Number: Lirooter13S001
  • Brand Name: LiRooter
  • Application : for 13S 48V Lithium Ion Battery Protection
  • Function : with full set of protection
  • Dimension: 90*42*10mm or 15mm
  • Constant discharge current : 20A or 40A
  • Constant charge current : 5A
Product Description

Application: This is a high end protection circuit board developed by us by considering all factors which would has 

possiblity to damge the BMS . it has full set of protection than other normal PCB board . the Dimension of 

this Board is :42*90*9mm , which can be applied widely on Electric bike or Electric scooter vehicles etc or 

other 13S 48V Li ion Battery field . it has the different charge and discharge port with 5A rated Constant 

charge current 

 Feature and characteristics :

1) This Board has adopted with integrated chip managment solution with less quality risk and more stable working performance 

2) Working current is 20A constant current ,and this Board can be made with 40A constant current , please contact us if needs 

3) With weak electricity switch to control the discharge to prevent the drain of current during work-off time ( this BMS's On/OFF switch 

will cut-off the power consumption and output from all connection port , it will leave your battery at good status during work off time without

power consumption) 

4) With charge port protection function ,no voltage from the charge port  when disconnected with charge , O voltage output from 

the charge port .and with reverse connection protection function when user mixed the polarity of the charger ,it would not damage the 


5) With Balance function and over-charge ,over-discharge , over-current protection ,short protection ,High temperature protection function ,

with 5V USB connection connector on the BMS . 

6) with MCU   controlling processing for charge current  limitation .( when the current exceeded the rated charge current , the BMS will cut 

off the charge so as to prevent any wrong charger to damge the BMS accident .




Charge voltage


CC to CV 54.6V

Over charge Protection

Over charge detection voltage with single cell  




Over charge detection delay time


Over charge release voltage with single cell


Over discharge protection

Over discharge detection voltage


Over discharge detection delay time


Over discharge release voltage


Over current protection


Over current detection current


Over-current detection delay time


Short current protection

Short circuit detection current


Short circuit detection delay time


Over current recovery


Over current & short current release

Load disconnection

Constant current

Constant charge current


Constant  discharge current

20A (Can also be made with 40A current )


Balance start voltage


Balance current


High temperature protection

 Over-charge protection temperature degree


70±5 degree

Size (L*W*T)mm


 42*90*9mm for 20A and 12*90*15mm for 40A 

Others Additional Functions

 With On/OFF switch , High temperature detection probe , and Charge port protection function ,with 5V USB Out put Module  

Photo Display
5V USB connection Module specification sheet :
Specification reference

Connection Diagram

Connection 13S llt

My distinguished customers : you can contac us through trademanager or by email if  you have any further questions with our product 


 Please choose the shipment way as you like ,you you can consider express delivery way if your order is urgent , but you

should afford the extra freight cost by express delivery . 

 As post by air ,usually it takes around 20-60 days ,please notice it and do not open the disputes easily before reaching

the contact with us ,we will try our best to solve the problem with our joint efforts . 


Return policy

We guarantee the product  from us with a 12 months warranty against defects in quality, but we are not responsible

for buyers' mistake or wrong handling, our product must be maintained in proper way. If Item is defective and not

working on arrival, please report the item to us within 7 days of receiving the defective product so we can issue a RMA. 

 Please contact us to request a return authorization. Please include your name, auction number, and reason for return when

you contact us. All items returned must contain all original packaging materials. Please carefully repack the item. Items returned

will be tested and if found defective, the buyer will be shipped a new replacement unit immediately. In the event that a suitable 

replacement is not available a refund will be issued. 

The return shipment cost should be afforded by buyer if you can not accept our policy  ,please do not buy the item from us ,fair deal is importable

for both of us .



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