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4S 12V 40A high quality
4S 12V 40A high quality separate port lifepo4 BMS cell blance function for electric vehicle lithium
4S 12V 40A high quality separate port lifepo4 BMS cell blance function for electric vehicle lithium
4S 12V 40A high quality separate port lifepo4 BMS cell blance function for electric vehicle lithium

4S 12V 40A high quality separate port lifepo4 BMS cell blance function for electric vehicle lithium

Regular price $59.99 Sale price $115.99 Unit price per
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Product Description

GTK 4S 12V 40A high quality separate port lifepo4 BMS with cell blance function for electric vehicle lithium battery pack bms


Battery Description:


Size:L90 W80 T8.5
Working current:40A 




1、High-precision voltage detection with detection accuracy of ±25mV

2、Chip built-in equalization management, equalizing current up to 80mA

3、Low power design:<50uA

4、Capable of flexibly responding to the requirements of the charging and discharging separate port or the same port

5、Complete protection functions, including charge and discharge voltage, charge and discharge current, short circuit, high temperature protection

6、Equipped with cable for easy installation!


Installation Guide 
(pay attention to the same port and separate port )
Connecting method:
1. First, connect the "negative" of the battery pack to "B-" on the BMS board with the black line.
2. Connect the first cable (B-) to the negative pole of the first cell, connect the second cable (B1) to the positive pole of the first cell , and the third (B2) to the second cell positive, and so on. . . Bn (the last wire) also be connected to the positive pole of the last cell, which is the positive pole (B +) of the battery.
3. Use the Voltage device to detect whether the voltage of each adjacent two terminals of the cable terminal corresponds to the voltage of the battery.
4. If the above steps are correct, insert the cable, and check whether the Output is equal to the total voltage of the battery pack.
The meaning of the Output is:
1. ) The voltage between the charger negative and B +
2. ) The voltage between the load negative terminal and B +;
1. When installing the protection board, please fixed it firmly, be careful not to shake and other reasons caused by loose off!
2. Firstly to be welded each cable to the appropriate cell pole, then put the cable terminal into the board plugs, (Please do not insert the cable terminal and then welding cells, to prevent welding damage to the protection board! )




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Packaging Details
  • Unit Type: piece
  • Package Weight: 0.1kg (0.22lb.)
  • Package Size: 12cm x 8cm x 5cm (4.72in x 3.15in x 1.97in)

Accessory Type: Battery Accessories
Brand Name: Foxelion
Applications: 4S 12V lifepo4 battery
Type: 4S 12V Batteries Protection Board
Cell use : 3.2V lifepo4 battery
The configuration: 4 Series



As different computer display the colors differently,and the color maybe is little difference from the actual items,but we can guarantee the style is same,but maybe some not same performance on different bodies as on the models.Hope you can understand it.thank you!



Shipping Timeframe:

US, Australia, New Zealand: 2~3 weeks  France: 2~4 Weeks

UK, Germany, Canada: 3~5 weeks  Other European Countries: 3~5 Weeks

Asian Countries: 3~5 Weeks       Others: 3~8 Weeks·

 Items will be shipped in within 4 days after payment is received. 

Items are shipped from China using Post Air Mail Registered (HongKong Post, Sweden Post or Singapore Post).

The Parcel Status Can Be Tracked Via Post Official Website or 8-10 Days Later After Sending.The Real Delivery Date Is Subject to the Custom & Local Logistic Status.

In Case Express Service Required, Please Contact Us About the Detailed Freight.

If You Don't Receive the Item On Time, Please Take Time to Contact us.


We're not responsible for any custom duty or import tax.

 If you are not satisfied with the item you received, Please contact us for parcel return & payment refund.The returned parcel shouldbe sentback in original package (or well protected)in14days after the receipt.

If item is founddefective in 1 months, We will send you a replacement free of chargeor arrange the refund after the receipt of the defective item. But you have to pay for the returned freight.

We strive for 100% customer satisfaction on every sale we complete. If, for any reason you are not satisfied with your purchase, please contact us before leaving neutral or negative feedbacks.We'll work with you to solve the problem. We'll automatically leave positive feedbacks after received positive feedbacks from you.


We are family owned business, and we have served thousands of customers from all over the world. Our products are direct from factory, so we can provide quality items at very competitive price.


If you have any question, please contact us by the contact seller now button, leave us message or send us emails. Most emails are responded within 24 business hours. We work 5 days a week (Note: Buyers who use free email like AOL, Yahoo, the reply email may fall into your junk mail box. Please send email directly or try send email by other account).

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