12S Li ion Battery Smart BMS with 20A 30A 40A 60A constant discharge current for 50.4V lithium bluetooth PCB

1) Application : This is The PCB for 12 series 12*4.2V=50.4V (full voltage )  lithium ion battery pack with 20A

30A ,40A or 60A discharge current and charging current .the charge and discharge port is same . Size :Max 108*65*10mm

(for 20A or 30A version ) and Max 108*65*15mm (for 40A or 60A version)

2) Protection functions :

This BMS has applied with high quality IC chip specially for lithium battery protection purpose .highly detection

precision degree on over-charge,over-discharge,voltage balancing ,and with detection on wires disconnection functions,

with three layers of over-discharge and over-current detections and delay times in detecting process.( Over-current 1,

over current 2,short cicircuit protection ) . short-circuit of charging port ,with two layers protection against over-voltage

when charging :

3) With Mobile phone operation software systme to manage the detecting the battery working status and some parameters

setting . also this board can be available for the PC operation and Parameters setting on the computer .

4) With installed ON/OFF switch connector ( client should activate it via APP if needs this function afterwards )

5) With three roads temperature detection ( one internal + two external )

6) This BMS will includes such list :

with one Bluetooth module for . with wire and connector for the Battery and Software system of mobile phone will be sent to the buyer .

2) Default Parameters setting :

specification as below is our defaul setting value , clinet can use the PC module to set them on yourside without problems .if you want us to set it , you can leave a message to us based on your battery specification without problems

3)  Product List

Our Smart BMS with Bluetooth function will include free Bluetooth module and connection cables .if client needs PC communication module , you can buy it separately without problems

These parameters is just for reference purpose , you can set the protection parameters for your 12S Lithium  battery in according to your

battery specification without problems . you can wirte via our PC software ,and we will set it for your with 12S Lithium  Battery specifcation

before delivery .so you do not need to set it by yourself .

With Anroid and IOS APP to help you improve your battery overall working performance ,and prolong yourbattery lifespans well

Support PC communication with our PC communication adapter ( client can purcahseit separately if needs with below link )

https://www.aliexpress.com/item/1005001873833534.html

Connection instructions :

Notice of connection  :

A. Firstly ,Please connect bold wires from B- port of the BMS to the negative port of the battery pack .(B- wire should be as short as possible ) ,then connect these voltage detection wires (Please take off these wires from the BMS before connecting these wires to the battery to avoid any connection mistakes )

B. Second ,Please start connect these balance wires to the Battery system from BC0 ,Black thin wire should be connected to the battery negative , and the second wire -white wire BC1 should be connect to the positive port of the first series cell . BC2  should connect to the positive port of second series cell ,and BC3 wire to the third cell’s positive ….connection in this way in order one by one till to the last cell postive port

C. Third . After connection of these balance wires finished , please measure connector voltage from each Neighbouring wires ,the voltage between each neighbouring wires for Li ion battery should be less than 4V and for Lifepo4 Battery should be less than 3.5V ,after confirmation of these wires connection order , you can plug cable connector into the BMS .–wrong connection order will damage our BMS surely . please be carefully with this step .

D. Finally , connect C- wire as negative of charge and discharge , B+ wire as positive of charge and discharge , those wires should

use bold wire to make connection for large current distribution purpose . then please comparing the voltage from the BMS and voltage directly from the Battery to see if they are the same or not . if they are the same value . your connection is correct , otherwise terrible things will happend !!!

Attentions: Software of Bluetooth and PC communication tool will be sent to the client appointed address when you get our products , please

know it kindly in advance

Transaction terms :

A .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 .

B , Quality warranty issues :

All product we shipped will be tested fully to prevent any unexpected quality problems . if you are not

familiar with the battery assembly .please consult us or your nearby skillfully person , BMS can be easily damaged

without following connection methods , it will be nightmare for our supplier when face this kind of situation .

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

le 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.

     We offered free repairing service for all our BMS in Life , client should pay some key components cost and shipment cost

when warranty time expired .

C. Returns :

       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 .

You satisfaction and positive feedback is very importand to us. Pleae leave positive feedback and 5 stars if you are satisfied with our

items and services.

If you have any problems with our itmes or services, please feel free to contact us first before you leave negative feedback. We will do

our best to solve any problems and provide you with the best customer services.